This map shows the geographic impact of F. Schirra'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 F. Schirra with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites F. Schirra more than expected).
This network shows the impact of papers produced by F. Schirra. 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 F. Schirra. The network helps show where F. Schirra may publish in the future.
Co-authorship network of co-authors of F. Schirra
This figure shows the co-authorship network connecting the top 25 collaborators of F. Schirra.
A scholar is included among the top collaborators of F. Schirra 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 F. Schirra. F. Schirra is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Goebels, S., et al.. (2013). Keratokonuslinse. Der Ophthalmologe. 110(9). 830–838.5 indexed citations
3.
Häger, Tobias, F. Schirra, Berthold Seitz, & Barbara Käsmann‐Kellner. (2013). Behandlung der kindlichen Katarakte. Der Ophthalmologe. 110(2). 179–190.2 indexed citations
Häger, Tobias, F. Schirra, Thomas Kohnen, Berthold Seitz, & Barbara Käsmann‐Kellner. (2012). Behandlung der kindlichen Katarakte I. Der Ophthalmologe. 109(12). 1233–1245.1 indexed citations
Schirra, F. & Klaus W. Ruprecht. (2004). Das trockene Auge. Der Ophthalmologe. 101(1). 10–18.18 indexed citations
12.
Schirra, F., Takehiro Suzuki, Douglas Dickinson, et al.. (2003). Identification of Steroidogenic Enzyme mRNAs in Human Ocular Surface Tissues and Cells. Investigative Ophthalmology & Visual Science. 44(13). 1025–1025.1 indexed citations
13.
Richards, Stephen M., F. Schirra, Hiroko Yamagami, Takehiro Suzuki, & David A. Sullivan. (2003). Sex-Related Differences in Gene Expression in the Mouse Meibomian Gland. Investigative Ophthalmology & Visual Science. 44(13). 2520–2520.2 indexed citations
14.
Schirra, F., et al.. (2002). Development Of A Defined, Serum-Free Culture System For The Maintenance Of Epithelial Cells From The Mouse Meibomian Gland. Investigative Ophthalmology & Visual Science. 43(13). 3150–3150.3 indexed citations
15.
Schirra, F., et al.. (2002). Androgen Regulation of Gene Expression in the Mouse Meibomian Gland. Investigative Ophthalmology & Visual Science. 43(13). 4008–4008.2 indexed citations
16.
Richards, Stephen M., et al.. (2002). Sex and Androgen Influence on Gene Expression in Lacrimal Glands of Normal and Autoimmune Mice. Investigative Ophthalmology & Visual Science. 43(13). 3145–3145.1 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.