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Douglas J. Klein

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Mathematics 51 1030 878 480 383 248 9893

Douglas J. Klein publications per year

The chart shows the history of publications by Douglas J. Klein between 1967 and 2024, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Douglas J. Klein published across 58 years, from 1967 to 2024, averaging 6.8 papers a year. Output peaked at 21 publications in 2009. 4 of the 395 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1967 to 2024. Vertical axis: number of publications, 0 to 21. Peak 21 publications in 2009. 1967: 2 publications 1968: 0 publications 1969: 2 publications 1970: 1 publication 1971: 5 publications 1972: 0 publications 1973: 6 publications 1974: 5 publications 1975: 2 publications 1976: 8 publications 1977: 4 publications 1978: 2 publications 1979: 3 publications 1980: 3 publications 1981: 3 publications 1982: 6 publications 1983: 4 publications 1984: 5 publications 1985: 1 publication 1986: 11 publications 1987: 4 publications 1988: 7 publications 1989: 9 publications 1990: 8 publications 1991: 15 publications 1992: 11 publications 1993: 8 publications 1994: 11 publications 1995: 13 publications 1996: 10 publications 1997: 10 publications 1998: 10 publications 1999: 9 publications 2000: 8 publications 2001: 10 publications 2002: 19 publications 2003: 7 publications 2004: 10 publications 2005: 12 publications 2006: 9 publications 2007: 8 publications 2008: 6 publications 2009: 21 publications 2010: 6 publications 2011: 11 publications 2012: 8 publications 2013: 9 publications 2014: 11 publications 2015: 7 publications 2016: 5 publications 2017: 6 publications 2018: 2 publications 2019: 4 publications 2020: 5 publications 2021: 5 publications 2022: 4 publications 2023: 2 publications 2024: 2 publications
1967 2024

395 publications in total across all disciplines

View publications per year as a table
Douglas J. Klein: publications per year, 1967 to 2024
Year Publications
1967 2
1968 0
1969 2
1970 1
1971 5
1972 0
1973 6
1974 5
1975 2
1976 8
1977 4
1978 2
1979 3
1980 3
1981 3
1982 6
1983 4
1984 5
1985 1
1986 11
1987 4
1988 7
1989 9
1990 8
1991 15
1992 11
1993 8
1994 11
1995 13
1996 10
1997 10
1998 10
1999 9
2000 8
2001 10
2002 19
2003 7
2004 10
2005 12
2006 9
2007 8
2008 6
2009 21
2010 6
2011 11
2012 8
2013 9
2014 11
2015 7
2016 5
2017 6
2018 2
2019 4
2020 5
2021 5
2022 4
2023 2
2024 2
Total 395
Download as CSV

Douglas J. Klein publication distribution in Mathematics in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Mathematics in 2026. The highlighted bar marks where Douglas J. Klein sits on this spectrum.

No. of scientists
25 50 75 100
Bar chart with 100 bars. Horizontal axis: publications, 42–46 to 537+. Vertical axis: number of scientists, 0 to 112. Most scientists, 112, have 142–146 publications. The last bar groups every scientist with 537 publications or more. The highlighted bar, 247–251 publications, is where this scientist sits. 42–46 publications: 3 scientists 47–51 publications: 5 scientists 52–56 publications: 7 scientists 57–61 publications: 20 scientists 62–66 publications: 14 scientists 67–71 publications: 25 scientists 72–76 publications: 19 scientists 77–81 publications: 35 scientists 82–86 publications: 50 scientists 87–91 publications: 60 scientists 92–96 publications: 86 scientists 97–101 publications: 84 scientists 102–106 publications: 83 scientists 107–111 publications: 90 scientists 112–116 publications: 99 scientists 117–121 publications: 90 scientists 122–126 publications: 91 scientists 127–131 publications: 109 scientists 132–136 publications: 110 scientists 137–141 publications: 98 scientists 142–146 publications: 112 scientists 147–151 publications: 102 scientists 152–156 publications: 88 scientists 157–161 publications: 106 scientists 162–166 publications: 83 scientists 167–171 publications: 102 scientists 172–176 publications: 77 scientists 177–181 publications: 81 scientists 182–186 publications: 78 scientists 187–191 publications: 71 scientists 192–196 publications: 92 scientists 197–201 publications: 64 scientists 202–206 publications: 69 scientists 207–211 publications: 64 scientists 212–216 publications: 62 scientists 217–221 publications: 58 scientists 222–226 publications: 53 scientists 227–231 publications: 50 scientists 232–236 publications: 46 scientists 237–241 publications: 46 scientists 242–246 publications: 46 scientists 247–251 publications: 43 scientists 252–256 publications: 29 scientists 257–261 publications: 45 scientists 262–266 publications: 30 scientists 267–271 publications: 33 scientists 272–276 publications: 34 scientists 277–281 publications: 30 scientists 282–286 publications: 31 scientists 287–291 publications: 21 scientists 292–296 publications: 34 scientists 297–301 publications: 26 scientists 302–306 publications: 10 scientists 307–311 publications: 17 scientists 312–316 publications: 23 scientists 317–321 publications: 13 scientists 322–326 publications: 16 scientists 327–331 publications: 26 scientists 332–336 publications: 13 scientists 337–341 publications: 13 scientists 342–346 publications: 16 scientists 347–351 publications: 17 scientists 352–356 publications: 12 scientists 357–361 publications: 18 scientists 362–366 publications: 18 scientists 367–371 publications: 9 scientists 372–376 publications: 11 scientists 377–381 publications: 8 scientists 382–386 publications: 8 scientists 387–391 publications: 9 scientists 392–396 publications: 9 scientists 397–401 publications: 8 scientists 402–406 publications: 11 scientists 407–411 publications: 6 scientists 412–416 publications: 6 scientists 417–421 publications: 9 scientists 422–426 publications: 8 scientists 427–431 publications: 5 scientists 432–436 publications: 8 scientists 437–441 publications: 8 scientists 442–446 publications: 4 scientists 447–451 publications: 4 scientists 452–456 publications: 4 scientists 457–461 publications: 2 scientists 462–466 publications: 2 scientists 467–471 publications: 4 scientists 472–476 publications: 3 scientists 477–481 publications: 3 scientists 482–486 publications: 6 scientists 487–491 publications: 3 scientists 492–496 publications: 5 scientists 497–501 publications: 5 scientists 502–506 publications: 1 scientist 507–511 publications: 6 scientists 512–516 publications: 4 scientists 517–521 publications: 1 scientist 522–526 publications: 3 scientists 527–531 publications: 1 scientist 532–536 publications: 4 scientists 537+ publications: 100 scientists
42–46 publications 537+

This scientist: 248 publications — 77th percentile

77% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 537 publications or more.

View publications distribution as a table
Number of Mathematics scientists by publication count, Research.com 2026 ranking edition. Based on 3,584 ranked scientists.
Publications Scientists This scientist
42–46 3
47–51 5
52–56 7
57–61 20
62–66 14
67–71 25
72–76 19
77–81 35
82–86 50
87–91 60
92–96 86
97–101 84
102–106 83
107–111 90
112–116 99
117–121 90
122–126 91
127–131 109
132–136 110
137–141 98
142–146 112
147–151 102
152–156 88
157–161 106
162–166 83
167–171 102
172–176 77
177–181 81
182–186 78
187–191 71
192–196 92
197–201 64
202–206 69
207–211 64
212–216 62
217–221 58
222–226 53
227–231 50
232–236 46
237–241 46
242–246 46
247–251 43 248
252–256 29
257–261 45
262–266 30
267–271 33
272–276 34
277–281 30
282–286 31
287–291 21
292–296 34
297–301 26
302–306 10
307–311 17
312–316 23
317–321 13
322–326 16
327–331 26
332–336 13
337–341 13
342–346 16
347–351 17
352–356 12
357–361 18
362–366 18
367–371 9
372–376 11
377–381 8
382–386 8
387–391 9
392–396 9
397–401 8
402–406 11
407–411 6
412–416 6
417–421 9
422–426 8
427–431 5
432–436 8
437–441 8
442–446 4
447–451 4
452–456 4
457–461 2
462–466 2
467–471 4
472–476 3
477–481 3
482–486 6
487–491 3
492–496 5
497–501 5
502–506 1
507–511 6
512–516 4
517–521 1
522–526 3
527–531 1
532–536 4
537+ 100
Download as CSV

Douglas J. Klein D-index placement in Mathematics in 2026

The chart shows the D-index (discipline H-index) distribution of Mathematics scientists ranked by Research.com in 2026. The highlighted bar marks where Douglas J. Klein sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 57 bars. Horizontal axis: D-Index, 30 to 86+. Vertical axis: number of scientists, 0 to 174. Most scientists, 174, have 30 D-Index. The last bar groups every scientist with 86 D-Index or more. The highlighted bar, 51 D-Index, is where this scientist sits. 30 D-Index: 174 scientists 31 D-Index: 151 scientists 32 D-Index: 174 scientists 33 D-Index: 117 scientists 34 D-Index: 136 scientists 35 D-Index: 127 scientists 36 D-Index: 145 scientists 37 D-Index: 153 scientists 38 D-Index: 150 scientists 39 D-Index: 150 scientists 40 D-Index: 138 scientists 41 D-Index: 136 scientists 42 D-Index: 93 scientists 43 D-Index: 108 scientists 44 D-Index: 115 scientists 45 D-Index: 112 scientists 46 D-Index: 103 scientists 47 D-Index: 75 scientists 48 D-Index: 59 scientists 49 D-Index: 67 scientists 50 D-Index: 60 scientists 51 D-Index: 57 scientists 52 D-Index: 59 scientists 53 D-Index: 62 scientists 54 D-Index: 60 scientists 55 D-Index: 50 scientists 56 D-Index: 42 scientists 57 D-Index: 54 scientists 58 D-Index: 50 scientists 59 D-Index: 42 scientists 60 D-Index: 41 scientists 61 D-Index: 35 scientists 62 D-Index: 40 scientists 63 D-Index: 21 scientists 64 D-Index: 31 scientists 65 D-Index: 27 scientists 66 D-Index: 29 scientists 67 D-Index: 19 scientists 68 D-Index: 25 scientists 69 D-Index: 17 scientists 70 D-Index: 18 scientists 71 D-Index: 12 scientists 72 D-Index: 14 scientists 73 D-Index: 13 scientists 74 D-Index: 18 scientists 75 D-Index: 9 scientists 76 D-Index: 11 scientists 77 D-Index: 10 scientists 78 D-Index: 9 scientists 79 D-Index: 16 scientists 80 D-Index: 12 scientists 81 D-Index: 10 scientists 82 D-Index: 5 scientists 83 D-Index: 5 scientists 84 D-Index: 13 scientists 85 D-Index: 6 scientists 86+ D-Index: 99 scientists
30 D-Index 86+

This scientist: 51 D-Index — 73rd percentile

73% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 86 D-Index or more.

View D-Index distribution as a table
Number of Mathematics scientists by D-index, Research.com 2026 ranking edition. Based on 3,584 ranked scientists.
D-Index Scientists This scientist
30 174
31 151
32 174
33 117
34 136
35 127
36 145
37 153
38 150
39 150
40 138
41 136
42 93
43 108
44 115
45 112
46 103
47 75
48 59
49 67
50 60
51 57 51
52 59
53 62
54 60
55 50
56 42
57 54
58 50
59 42
60 41
61 35
62 40
63 21
64 31
65 27
66 29
67 19
68 25
69 17
70 18
71 12
72 14
73 13
74 18
75 9
76 11
77 10
78 9
79 16
80 12
81 10
82 5
83 5
84 13
85 6
86+ 99
Download as CSV

Overview

Douglas J. Klein is affiliated with Texas A&M University at Galveston in the United States. Their research primarily focuses on materials science and chemistry, with specific contributions in materials chemistry and organic chemistry. Additional subfields of their research include radiology, nuclear medicine and imaging, atomic and molecular physics and optics, as well as computational theory and mathematics.

Their scientific work covers key topics such as boron compounds in chemistry, boron and carbon nanomaterials research, fullerene chemistry and applications, crystallization and solubility studies, X-ray diffraction in crystallography, organoboron and organosilicon chemistry, and the physics of superconductivity and magnetism.

Douglas J. Klein has collaborated frequently with several researchers, including:

  • Josep M. Oliva
  • José Elguero
  • Maxime Ferrer
  • Ibón Alkorta
  • Laimutis Bytautas

Their work has appeared in a variety of scientific venues, with multiple publications in The Cambridge Structural Database, International Journal of Quantum Chemistry, and Journal of Mathematical Chemistry. Other journals include ChemPhysChem and Theoretical Chemistry Accounts.

Recent publications authored or co-authored by Douglas J. Klein include:

  • "Hückeloid model for planar boranes," 2021, Theoretical Chemistry Accounts

Other related papers in the field connected to their research interests are:

  • "Diborane Concatenation Leads to New Planar Boron Chemistry," 2020, ChemPhysChem
  • "Quantum-phase transitions in 1D Heisenberg spin systems," 2020, International Journal of Quantum Chemistry
  • "The effect of hetero-atoms on spin exchange coupling pathways (ECPs): a computational investigation," 2023, Physical Chemistry Chemical Physics
  • "Quantum phase transitions in frustrated 1D Heisenberg spin systems," 2021, Low Temperature Physics

Best Publications

  • Resistance distance

    Unknown

  • On the definition of the hyper-Wiener index for cycle-containing structures

    Douglas J. Klein;István Lukovits;Ivan Gutman

  • Graphitic polymer strips with edge states

    D.J. Klein

  • Extensions of the Wiener Number

    H.-Y. Zhu;Douglas J. Klein;István Lukovits

  • Molecular cyclicity and centricity of polycyclic graphs. I. Cyclicity based on resistance distances or reciprocal distances

    Danail Bonchev;Alexandru T. Balaban;Xiaoyu Liu;Douglas J. Klein

  • HIGH-SPIN HYDROCARBONS

    D. J. Klein;C. J. Nelin;S. Alexander;F. A. Matsen

  • Degenerate perturbation theory

    D. J. Klein

  • Resistance-Distance Sum Rules*

    Douglas J. Klein

  • Resistance-distance matrix: A computational algorithm and its application

    Darko Babić;Douglas Klein;Istvan Lukovits;Sonja Nikolić

  • Icosahedral symmetry carbon cage molecules

    D. J. Klein;W. A. Seitz;T. G. Schmalz

  • Graphical properties of polyhexes: perfect matching vector and forcing

    Frank Harary;Douglas J. Klein;Tomislav P. Živkovič

  • Innate degree of freedom of a graph

    D. J. Klein;M. Randić

  • Molecular topological index: a relation with the Wiener index

    Douglas J. Klein;Zlatko Mihalic;Dejan Plavsic;Nenad Trinajstic

  • Modeling the bioconcentration factors and bioaccumulation factors of polychlorinated biphenyls with posetic quantitative super-structure/activity relationships (QSSAR)

    Teodora Ivanciuc;Ovidiu Ivanciuc;Douglas J. Klein

  • A recursion formula for resistance distances and its applications

    Yujun Yang;Douglas J. Klein

  • Exact ground states for a class of antiferromagnetic Heisenberg models with short-range interactions

    D J Klein

  • Graphitic Edges and Unpaired π-Electron Spins

    D. J. Klein;L. Bytautas

  • Partially filled linear Hubbard model near the atomic limit

    D. J. Klein;W. A. Seitz

  • Perturbation Expansion of the Linear Hubbard Model

    D. J. Klein;W. A. Seitz

  • Partial Orderings in Chemistry

    Douglas J. Klein;Darko Babic

  • Wiener index extension by counting even/odd graph distances.

    Ovidiu Ivanciuc;Teodora Ivanciuc;Douglas J. Klein;William A. Seitz

Frequent Co-Authors

Alexandru T. Balaban
Alexandru T. Balaban Texas A&M University at Galveston
Milan Randić
Milan Randić Drake University
Nenad Trinajstić
Nenad Trinajstić Institut Ruđer Bošković
Andrés Ayuela
Andrés Ayuela Spanish National Research Council
Thomas H. Seligman
Thomas H. Seligman National Autonomous University of Mexico
Luis Serrano-Andrés
Luis Serrano-Andrés University of Valencia
Ivan Gutman
Ivan Gutman University of Kragujevac
J. Brunvoll
J. Brunvoll Norwegian University of Science and Technology
Frank Harary
Frank Harary New Mexico State University
Angel Rubio
Angel Rubio Max Planck Institute for the Structure and Dynamics of Matter

External Links

Personal website of Douglas J. Klein Google Scholar page

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Best Scientists Citing Douglas J. Klein

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Publications: 92

Milan Randić

Milan Randić

Drake University

Publications: 62

Patrick W. Fowler

Patrick W. Fowler

University of Sheffield

Publications: 52

Alexandru T. Balaban

Alexandru T. Balaban

Texas A&M University at Galveston

Publications: 45

Nenad Trinajstić

Nenad Trinajstić

Institut Ruđer Bošković

Publications: 40

Jun-ichi Aihara

Jun-ichi Aihara

Shizuoka University

Publications: 28

Harold W. Kroto

Harold W. Kroto

Florida State University

Publications: 22

Ernesto Estrada

Ernesto Estrada

Institute for Cross-Disciplinary Physics and Complex Systems

Publications: 20

Bo Zhou

Bo Zhou

South China Normal University

Publications: 20

Andrey A. Toropov

Andrey A. Toropov

Mario Negri Institute for Pharmacological Research

Publications: 20

David E. Manolopoulos

David E. Manolopoulos

University of Oxford

Publications: 18

Klaus Müllen

Klaus Müllen

Max Planck Institute for Polymer Research

Publications: 18

Zhongzhi Zhang

Zhongzhi Zhang

Fudan University

Publications: 17

Jinde Cao

Jinde Cao

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Matthias Dehmer

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