Grypania spiralis (Czech Wikipedia)

Analysis of information sources in references of the Wikipedia article "Grypania spiralis" in Czech language version.

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doi.org

dx.doi.org

nih.gov

ncbi.nlm.nih.gov

  • Han, T.M., Runnegar, B. Megascopic eukaryotic algae from the 2.1-billion-year-old negaunee iron-formation, Michigan. Science. 1992, roč. 257, čís. 5067, s. 232–5. PMID 1631544. 
  • KNOLL, Andrew H., Javaux, E.J, Hewitt, D. and Cohen, P. Eukaryotic organisms in Proterozoic oceans. Philosophical Transactions of the Royal Society of London, Part B. 2006, roč. 361, čís. 1470, s. 1023–1038. Dostupné online. DOI 10.1098/rstb.2006.1843. PMID 16754612.  Archivováno 26. 5. 2020 na Wayback Machine.

pubmedcentral.nih.gov

web.archive.org