E. Klein

672 total citations
33 papers, 466 citations indexed

About

E. Klein is a scholar working on Ecology, Evolution, Behavior and Systematics, Organic Chemistry and Plant Science. According to data from OpenAlex, E. Klein has authored 33 papers receiving a total of 466 indexed citations (citations by other indexed papers that have themselves been cited), including 10 papers in Ecology, Evolution, Behavior and Systematics, 9 papers in Organic Chemistry and 8 papers in Plant Science. Recurrent topics in E. Klein's work include Plant and animal studies (7 papers), Pharmacological Effects of Medicinal Plants (4 papers) and Synthetic Organic Chemistry Methods (4 papers). E. Klein is often cited by papers focused on Plant and animal studies (7 papers), Pharmacological Effects of Medicinal Plants (4 papers) and Synthetic Organic Chemistry Methods (4 papers). E. Klein collaborates with scholars based in Germany, Austria and United States. E. Klein's co-authors include Dieter Strack, G. O. Schenc̀k, G. Ohloff, Herwig Teppner, Daniel Tyteca, E. Moisar, Mikael Hedrén, M. Pailer, Wolfgang Schmidt and Oskar Hansson and has published in prestigious journals such as Journal of Agricultural and Food Chemistry, Tetrahedron and Phytochemistry.

In The Last Decade

E. Klein

32 papers receiving 433 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
E. Klein Germany	12	156	153	132	124	63	33	466
Bjarne Kimland Sweden	13	173 1.1×	79 0.5×	33 0.3×	97 0.8×	22 0.3×	34	388
Makoto Takai Japan	11	174 1.1×	67 0.4×	120 0.9×	145 1.2×	23 0.4×	46	442
Carl‐Johan Widén Finland	16	151 1.0×	92 0.6×	295 2.2×	388 3.1×	10 0.2×	55	624
Harold M. Sell United States	14	317 2.0×	78 0.5×	74 0.6×	471 3.8×	26 0.4×	71	773
Yoshihiro Shuto Japan	14	234 1.5×	174 1.1×	42 0.3×	184 1.5×	33 0.5×	55	555
Soňa Vašı́čková Czechia	14	128 0.8×	87 0.6×	128 1.0×	125 1.0×	13 0.2×	61	496
Takaaki Aratani Japan	14	215 1.4×	138 0.9×	72 0.5×	97 0.8×	50 0.8×	35	475
Hans Reznik Germany	15	231 1.5×	66 0.4×	156 1.2×	279 2.3×	13 0.2×	42	667
S. Liaaen-Jensen Norway	16	178 1.1×	170 1.1×	87 0.7×	57 0.5×	23 0.4×	47	572
Kazuo Haga Japan	15	150 1.0×	129 0.8×	90 0.7×	159 1.3×	53 0.8×	39	449

Countries citing papers authored by E. Klein

Since Specialization

Citations

This map shows the geographic impact of E. Klein's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by E. Klein with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites E. Klein more than expected).

Fields of papers citing papers by E. Klein

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by E. Klein. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by E. Klein. The network helps show where E. Klein may publish in the future.

Co-authorship network of co-authors of E. Klein

This figure shows the co-authorship network connecting the top 25 collaborators of E. Klein. A scholar is included among the top collaborators of E. Klein based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with E. Klein. E. Klein is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Hedrén, Mikael, Richard Lorenz, Herwig Teppner, et al.. (2017). Evolution and systematics of polyploid Nigritella (Orchidaceae). Nordic Journal of Botany. 36(3). 23 indexed citations

Tyteca, Daniel & E. Klein. (2009). Genes, morphology and biology – The systematics of Orchidinae revisited: a reappraisal. Digital Access to Libraries. 41(3). 473–480. 6 indexed citations

Teppner, Herwig & E. Klein. (1998). Etiam atque etiam--Nigritella versus Gymnadenia: Neukombinationen und Gymnadenia dolomitensis spec. nova (Orchidaceae-Ocrchideae). 38(1). 220–224. 7 indexed citations

Strack, Dieter, et al.. (1989). Anthocyanin patterns in european orchids and their taxonomic and phylogenetic relevance. Phytochemistry. 28(8). 2127–2139. 58 indexed citations

Teppner, Herwig & E. Klein. (1989). Gymnigritella runei spec. nova (Orchidaceae-Orchideae) aus Schweden. 7 indexed citations

Pailer, M., et al.. (1981). �ber die Zusammensetzung des Pyrolysates von Weihrauch ?Aden?, dem Gummiharz vonBoswellia carteri Birdw., 3. Mitt.. Monatshefte für Chemie - Chemical Monthly. 112(8-9). 987–1006. 11 indexed citations

Pailer, M., et al.. (1981). �ber die Zusammensetzung des Pyrolysates von Weihrauch ?Aden?, dem Gummiharz vonBoswellia carteri Birdw., 2. Mitt.. Monatshefte für Chemie - Chemical Monthly. 112(5). 595–603. 11 indexed citations

Klein, E., et al.. (1978). (S)-1-isopropyl-4,8,12-trimethyl-cyclotetradeca-3e,7e,11e-trien-1-ol, ein neues cembrenol aus dem ätherischen öl von olibanum.. Tetrahedron Letters. 19(4). 349–352. 16 indexed citations

Klein, E., et al.. (1976). Apoterpene und Aposesquiterpene durch Cooligomerisation von Methacrylsäure‐methylester mit Isopren und Myrcen an einem homogenen Nickel‐Katalysator. Ein Beispiel für die Produktsteuerung durch Störung von Zyklen. Justus Liebig s Annalen der Chemie. 1976(2). 352–366. 2 indexed citations

10.

Klein, E., et al.. (1974). Topography of Latent Image and Doping Centres in Silver Halide Microcrystals. The Journal of Photographic Science. 22(4). 174–180. 3 indexed citations

11.

Klein, E., et al.. (1973). Zur Prins‐Reaktion mit Cycloolefinen, I. Reaktion von Cyclododecen mit Paraformaldehyd. Justus Liebig s Annalen der Chemie. 1973(11). 1797–1815. 1 indexed citations

12.

Klein, E., et al.. (1973). Darstellung von 5‐Alkyl‐3‐methyl‐cyclohexanolen durch Guerbet‐Reaktion. Justus Liebig s Annalen der Chemie. 1973(5-6). 1004–1017. 4 indexed citations

13.

Fox, Cecil H., E. Klein, & Siegfried Huneck. (1970). Colensionsäure, ein neues depsidon aus stereocaulon colensoi. Phytochemistry. 9(12). 2567–2571. 6 indexed citations

14.

Klein, E., et al.. (1964). Versuch einer Synthese des Hymentherens. Chemische Berichte. 97(9). 2700–2703. 6 indexed citations

15.

Klein, E. & E. Moisar. (1964). Ia: Properties of Photographic Emulsion Grains. The Journal of Photographic Science. 12(5). 242–251. 1 indexed citations

16.

Klein, E., et al.. (1964). Die Chemie der Linalool‐oxide. Justus Liebig s Annalen der Chemie. 675(1). 73–82. 29 indexed citations

17.

Klein, E., et al.. (1963). Tone Reproduction in Colour Scales. The Journal of Photographic Science. 11(4). 177–185. 5 indexed citations

18.

Ohloff, G., E. Klein, & G. O. Schenc̀k. (1961). Darstellung von „Rosenoxyden” und anderen Hydropyran‐Derivaten über Photohydroperoxyde. Angewandte Chemie. 73(16). 578–578. 58 indexed citations

19.

Klein, E., et al.. (1959). Bildung und Wachstum von Silberkeimen an Halogensilberk�rnern. Die Naturwissenschaften. 46(7). 225–227. 3 indexed citations

20.

Klein, E.. (1958). Bestimmung der Anzahl der Belichtungskeime im latenten photographischen Bild. Zeitschrift für Elektrochemie Berichte der Bunsengesellschaft für physikalische Chemie. 62(8). 870–873.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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