Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies
if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the
same subfield and year (this is the minimum needed to enter the top 1%, not the average
within it), or reaches the top citation threshold in at least one of its specific research
topics.
History of Atmospheric Lead Deposition Since 12,370 14 C yr BP from a Peat Bog, Jura Mountains, Switzerland
1998630 citationsRobert Frei, Jan D. Kramers et al.profile →
Fluctuations in Precambrian atmospheric oxygenation recorded by chromium isotopes
2009498 citationsRobert Frei, Claudio Gaucher et al.profile →
This map shows the geographic impact of Robert Frei'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 Robert Frei with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Robert Frei more than expected).
This network shows the impact of papers produced by Robert Frei. 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 Robert Frei. The network helps show where Robert Frei may publish in the future.
Co-authorship network of co-authors of Robert Frei
This figure shows the co-authorship network connecting the top 25 collaborators of Robert Frei.
A scholar is included among the top collaborators of Robert Frei 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 Robert Frei. Robert Frei is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Frei, Robert, et al.. (2014). Application of Chromium Stable Isotopes to the Evaluation of Cr(VI) Contamination in Groundwater and Rock Leachates from Central Euboea, the Assopos Basin and Thebes Valley (Greece). 2014 AGU Fall Meeting. 2014.3 indexed citations
Mondal, Sisir K., et al.. (2009). Geochemistry of Mesoarchean Sukinda chromite deposits (India): Implications for gabbro-breccia hosted PGE mineralization. Geochimica et Cosmochimica Acta Supplement. 73.1 indexed citations
13.
Mondal, Sisir K., Rajarshi Mukherjee, Minik T. Rosing, Robert Frei, & Tod Waight. (2008). Petrologic, Geochemical and Isotopic Study of 3.1Ga Peridotite-Chromitite Suite from the Western Dharwar Craton, India: Evidence for Recycling of Oceanic Crust in the Mesoarchean. Research at the University of Copenhagen (University of Copenhagen). 2008.3 indexed citations
Frei, Robert, Henrik Stendal, & Karsten Secher. (2006). Precambrian crustal evolution and Cretaceous–Palaeogene faulting in West Greenland: 207Pb-206Pb dating of magnetite, monazite and allanite in the central and northern Nagssugtoqidian orogen, West Greenland. SHILAP Revista de lepidopterología.3 indexed citations
16.
Frei, Robert, et al.. (1999). Geochronology of the late Archaean Razi and Chilimanzi suites of granites in Zimbabwe: implications for the late Archaean tectonics of the Limpopo Belt and Zimbabwe Craton. Bern Open Repository and Information System (University of Bern).48 indexed citations
Frei, Robert, et al.. (1997). Verbessert die Technik der Konstruktdifferenzierung die Ergebnisse der Paartherapie. Familiendynamik. 22(1). 64–82.1 indexed citations
19.
Niedermann, Samuel, et al.. (1993). Formation of Alpine Au ~30 Ma ago: further results of the development of a dating method for native gold. Meteoritics and Planetary Science. 28(3). 411–412.2 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.