Stein Sommer

928 total citations
16 papers, 790 citations indexed

About

Stein Sommer is a scholar working on Pulmonary and Respiratory Medicine, Materials Chemistry and Molecular Biology. According to data from OpenAlex, Stein Sommer has authored 16 papers receiving a total of 790 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Pulmonary and Respiratory Medicine, 13 papers in Materials Chemistry and 8 papers in Molecular Biology. Recurrent topics in Stein Sommer's work include Photodynamic Therapy Research Studies (14 papers), Porphyrin and Phthalocyanine Chemistry (12 papers) and Porphyrin Metabolism and Disorders (6 papers). Stein Sommer is often cited by papers focused on Photodynamic Therapy Research Studies (14 papers), Porphyrin and Phthalocyanine Chemistry (12 papers) and Porphyrin Metabolism and Disorders (6 papers). Stein Sommer collaborates with scholars based in Norway, Switzerland and Germany. Stein Sommer's co-authors include Johan Moan, Terje Christensen, C. Rimington, Johan Moan, Jan F. Evensen and Petter Balke Jacobsen and has published in prestigious journals such as FEBS Letters, British Journal of Cancer and Cancer Letters.

In The Last Decade

Stein Sommer

16 papers receiving 730 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Stein Sommer Norway	12	623	379	360	281	77	16	790
André Western Norway	11	405 0.7×	236 0.6×	238 0.7×	181 0.6×	50 0.6×	14	548
V. Rosenbach‐Belkin Israel	15	487 0.8×	202 0.5×	383 1.1×	256 0.9×	63 0.8×	20	751
Roberta Biolo Italy	12	479 0.8×	374 1.0×	391 1.1×	107 0.4×	40 0.5×	16	589
Adam B. Sumlin United States	10	342 0.5×	240 0.6×	233 0.6×	162 0.6×	75 1.0×	17	490
Martyna Krzykawska-Serda Poland	12	151 0.2×	161 0.4×	254 0.7×	92 0.3×	54 0.7×	30	512
Carmen M. Wilmot United States	11	207 0.3×	104 0.3×	224 0.6×	90 0.3×	112 1.5×	14	557
Ying Dong United States	8	251 0.4×	175 0.5×	275 0.8×	108 0.4×	29 0.4×	11	496
Carrie Batt United States	9	181 0.3×	108 0.3×	152 0.4×	103 0.4×	34 0.4×	13	351
Soo Khee Chee Singapore	9	186 0.3×	123 0.3×	200 0.6×	80 0.3×	52 0.7×	17	369
F Sieber United States	9	168 0.3×	51 0.1×	84 0.2×	121 0.4×	30 0.4×	9	364

Countries citing papers authored by Stein Sommer

Since Specialization

Citations

This map shows the geographic impact of Stein Sommer'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 Stein Sommer with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Stein Sommer more than expected).

Fields of papers citing papers by Stein Sommer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Stein Sommer. 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 Stein Sommer. The network helps show where Stein Sommer may publish in the future.

Co-authorship network of co-authors of Stein Sommer

This figure shows the co-authorship network connecting the top 25 collaborators of Stein Sommer. A scholar is included among the top collaborators of Stein Sommer 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 Stein Sommer. Stein Sommer is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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16 of 16 papers shown

Sommer, Stein, et al.. (2000). [Birdshot chorioretinopathy associated with tamoxifen retinal toxicity].. PubMed. 23(5). 494–7. 4 indexed citations

Sommer, Stein, et al.. (1987). Photodynamic therapy of C3H mouse mammary carcinoma with haematoporphyrin di-ethers as sensitizers. British Journal of Cancer. 55(5). 483–486. 34 indexed citations

Sommer, Stein, C. Rimington, & Johan Moan. (1987). Porphyrin derivatives having physical and chemical characteristics similar to those of the active components of hematoporphyrin derivative and with very strong photosensitizing effects. Journal of Photochemistry and Photobiology B Biology. 1(2). 241–246. 20 indexed citations

Rimington, C., Stein Sommer, & Johan Moan. (1987). Hematoporphyrin ethers—I. Generalized synthesis and chemical properties. International Journal of Biochemistry. 19(4). 315–320. 32 indexed citations

Moan, Johan, C. Rimington, & Stein Sommer. (1987). Cellular uptake and photosensitizing properties of hematoporphyrin di-ethers with similar chromatographic properties as the tumorlocalizing fraction of hematoporphyrin derivative. Cancer Letters. 34(3). 283–289. 18 indexed citations

Moan, Johan, Stein Sommer, C. Rimington, & Petter Balke Jacobsen. (1985). Heat treatment of hematoporphyrin derivative results in an increase in its ability to sensitize cells to photoinactivation. Photobiochemistry and photobiophysics.. 9(4). 253–261. 3 indexed citations

Moan, Johan & Stein Sommer. (1985). Oxygen dependence of the photosensitizing effect of hematoporphyrin derivative in NHIK 3025 cells.. PubMed. 45(4). 1608–10. 202 indexed citations

Sommer, Stein, Johan Moan, & C. Rimington. (1985). Separation of Different Fractions of Hematoporphyrin Derivative by a Two-Phase Extraction System. Advances in experimental medicine and biology. 193. 207–211. 4 indexed citations

Moan, Johan, et al.. (1984). A device to determine fluence-response curves for photoinactivation of cells in vitro. Photobiochemistry and photobiophysics.. 8(1). 11–17. 15 indexed citations

10.

Moan, Johan & Stein Sommer. (1984). ACTION SPECTRA FOR HEMATOPORPHYRIN DERIVATIVE AND PHOTOFRIN II WITH RESPECT TO SENSITIZATION OF HUMAN CELLSIN VITROTO PHOTOINACTIVATION. Photochemistry and Photobiology. 40(5). 631–634. 88 indexed citations

11.

Evensen, Jan F., et al.. (1984). Tissue distribution of 3H-hematoporphyrin derivative and its main components, 67Ga and 131I-albumin in mice bearing Lewis lung carcinoma.. PubMed. 170. 541–62. 10 indexed citations

12.

Evensen, Jan F., Stein Sommer, Johan Moan, & Terje Christensen. (1984). Tumor-localizing and photosensitizing properties of the main components of hematoporphyrin derivative.. PubMed. 44(2). 482–6. 68 indexed citations

13.

Sommer, Stein, C. Rimington, & Johan Moan. (1984). Formation of metal complexes of tumor‐localizing porphyrins. FEBS Letters. 172(2). 267–271. 34 indexed citations

14.

Moan, Johan & Stein Sommer. (1983). Uptake of the components of hematoporphyrin derivative by cells and tumours. Cancer Letters. 21(2). 167–174. 96 indexed citations

15.

Moan, Johan, Terje Christensen, & Stein Sommer. (1982). The main photosensitizing components of hematoporphyrin derivative. Cancer Letters. 15(2). 161–166. 93 indexed citations

16.

Moan, Johan & Stein Sommer. (1981). Fluorescence and Absorption Properties of the Components of Hematoporphyrin Derivative. Photobiochemistry and photobiophysics.. 3(2). 93–103. 69 indexed citations

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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