This map shows the geographic impact of W. Gellermann'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 W. Gellermann with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites W. Gellermann more than expected).
This network shows the impact of papers produced by W. Gellermann. 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 W. Gellermann. The network helps show where W. Gellermann may publish in the future.
Co-authorship network of co-authors of W. Gellermann
This figure shows the co-authorship network connecting the top 25 collaborators of W. Gellermann.
A scholar is included among the top collaborators of W. Gellermann 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 W. Gellermann. W. Gellermann is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Tanito, Masaki, Akira Obana, Shigetoshi Okazaki, Akihiro Ohira, & W. Gellermann. (2009). Change of Macular Pigment Density Quantified With Resonance Raman Spectrophotometry and Autofluorescence Imaging in Normal Subjects Supplemented With Oral Lutein or Zeaxanthin. Investigative Ophthalmology & Visual Science. 50(13). 1716–1716.1 indexed citations
4.
Bernstein, Paul S., Mohsen Sharifzadeh, Igor V. Ermakov, et al.. (2009). Macular Pigment Imaging in AREDS II Participants: Baseline Studies From an Ancillary Study of AREDS II Subjects Enrolled at the Moran Eye Center. Investigative Ophthalmology & Visual Science. 50(13). 729–729.1 indexed citations
5.
Sharifzadeh, Mohsen, et al.. (2005). In vitro Raman Imaging of Macular Pigments in Human Donor Eyes. Investigative Ophthalmology & Visual Science. 46(13). 1779–1779.1 indexed citations
Zhao, Da, et al.. (2003). A Double Blind, Placebo Controlled, Lutein Supplementation Study Evaluating Two Macular Carotenoid Measurement Methods: Resonance Raman Spectroscopy and Heterochromatic Flicker Photometry. Investigative Ophthalmology & Visual Science. 44(13). 1744–1744.1 indexed citations
8.
Bernstein, Paul S., et al.. (2003). Resonance Raman Spectroscopic Measurement of Macular Carotenoid Pigments in Patients with Early-Onset Macular Drusen. Investigative Ophthalmology & Visual Science. 44(13). 1806–1806.1 indexed citations
9.
Gellermann, W., et al.. (2002). Evaluation of Two Macular Carotenoid Measurement Methods: Resonance Raman Spectroscopy and Heterochromatic Flicker Photometry. Investigative Ophthalmology & Visual Science. 43(13). 2551–2551.4 indexed citations
10.
Zhao, Da, et al.. (2002). Resonance Raman Spectroscopic Measurement of Macular Carotenoid Pigments in Patients With Choroidal and Retinal Dystrophies. Investigative Ophthalmology & Visual Science. 43(13). 2544–2544.1 indexed citations
Gellermann, W., et al.. (1980). New F 2 + center lasers for the 1.3 to 1.8 μm range (A). Journal of the Optical Society of America A. 70. 634.1 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.