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993 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "993" in English language version.

refsWebsite
Global rank English rank
4nih.gov
4th place
4th place
2doi.org
2nd place
2nd place
2worldcat.org
5th place
5th place
1nationalgeographic.com
344th place
296th place
1nature.com
234th place
397th place

doi.org (Global: 2nd place; English: 2nd place)

  • Mekhaldi, Florian; Muscheler, Raimund; Adolphi, Florian; Aldahan, Ala; Beer, Jürg; McConnell, Joseph R.; Possnert, Göran; Sigl, Michael; Svensson, Anders; Synal, Hans-Arno; Welten, Kees C. (October 26, 2015). "Multiradionuclide evidence for the solar origin of the cosmic-ray events of AD 774/5 and 993/4". Nature Communications. 6 (1): 8611. doi:10.1038/ncomms9611. ISSN 2041-1723. PMC 4639793. PMID 26497389.
  • Kuitems, Margot; Wallace, Birgitta L.; Lindsay, Charles; Scifo, Andrea; Doeve, Petra; Jenkins, Kevin; Lindauer, Susanne; Erdil, Pınar; Ledger, Paul M.; Forbes, Véronique; Vermeeren, Caroline; Friedrich, Ronny; Dee, Michael W. (January 20, 2022). "Evidence for European presence in the Americas in ad 1021". Nature. 601 (7893): 388–391. doi:10.1038/s41586-021-03972-8. ISSN 0028-0836. PMC 8770119. PMID 34671168. Retrieved February 27, 2026.

nationalgeographic.com (Global: 344th place; English: 296th place)

nature.com (Global: 234th place; English: 397th place)

nih.gov (Global: 4th place; English: 4th place)

ncbi.nlm.nih.gov

  • Mekhaldi, Florian; Muscheler, Raimund; Adolphi, Florian; Aldahan, Ala; Beer, Jürg; McConnell, Joseph R.; Possnert, Göran; Sigl, Michael; Svensson, Anders; Synal, Hans-Arno; Welten, Kees C. (October 26, 2015). "Multiradionuclide evidence for the solar origin of the cosmic-ray events of AD 774/5 and 993/4". Nature Communications. 6 (1): 8611. doi:10.1038/ncomms9611. ISSN 2041-1723. PMC 4639793. PMID 26497389.
  • Kuitems, Margot; Wallace, Birgitta L.; Lindsay, Charles; Scifo, Andrea; Doeve, Petra; Jenkins, Kevin; Lindauer, Susanne; Erdil, Pınar; Ledger, Paul M.; Forbes, Véronique; Vermeeren, Caroline; Friedrich, Ronny; Dee, Michael W. (January 20, 2022). "Evidence for European presence in the Americas in ad 1021". Nature. 601 (7893): 388–391. doi:10.1038/s41586-021-03972-8. ISSN 0028-0836. PMC 8770119. PMID 34671168. Retrieved February 27, 2026.

pubmed.ncbi.nlm.nih.gov

  • Mekhaldi, Florian; Muscheler, Raimund; Adolphi, Florian; Aldahan, Ala; Beer, Jürg; McConnell, Joseph R.; Possnert, Göran; Sigl, Michael; Svensson, Anders; Synal, Hans-Arno; Welten, Kees C. (October 26, 2015). "Multiradionuclide evidence for the solar origin of the cosmic-ray events of AD 774/5 and 993/4". Nature Communications. 6 (1): 8611. doi:10.1038/ncomms9611. ISSN 2041-1723. PMC 4639793. PMID 26497389.
  • Kuitems, Margot; Wallace, Birgitta L.; Lindsay, Charles; Scifo, Andrea; Doeve, Petra; Jenkins, Kevin; Lindauer, Susanne; Erdil, Pınar; Ledger, Paul M.; Forbes, Véronique; Vermeeren, Caroline; Friedrich, Ronny; Dee, Michael W. (January 20, 2022). "Evidence for European presence in the Americas in ad 1021". Nature. 601 (7893): 388–391. doi:10.1038/s41586-021-03972-8. ISSN 0028-0836. PMC 8770119. PMID 34671168. Retrieved February 27, 2026.

worldcat.org (Global: 5th place; English: 5th place)

search.worldcat.org

  • Mekhaldi, Florian; Muscheler, Raimund; Adolphi, Florian; Aldahan, Ala; Beer, Jürg; McConnell, Joseph R.; Possnert, Göran; Sigl, Michael; Svensson, Anders; Synal, Hans-Arno; Welten, Kees C. (October 26, 2015). "Multiradionuclide evidence for the solar origin of the cosmic-ray events of AD 774/5 and 993/4". Nature Communications. 6 (1): 8611. doi:10.1038/ncomms9611. ISSN 2041-1723. PMC 4639793. PMID 26497389.
  • Kuitems, Margot; Wallace, Birgitta L.; Lindsay, Charles; Scifo, Andrea; Doeve, Petra; Jenkins, Kevin; Lindauer, Susanne; Erdil, Pınar; Ledger, Paul M.; Forbes, Véronique; Vermeeren, Caroline; Friedrich, Ronny; Dee, Michael W. (January 20, 2022). "Evidence for European presence in the Americas in ad 1021". Nature. 601 (7893): 388–391. doi:10.1038/s41586-021-03972-8. ISSN 0028-0836. PMC 8770119. PMID 34671168. Retrieved February 27, 2026.