Open problem (English Wikipedia)

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

Last modified:

Ref.Un. Ref.Website
Global rank English rank
434th place
249th place
2nd place
2nd place
4th place
4th place
49th place
31st place
14th place
9th place
15th place
8th place
1st place
1st place
5th place
5th place
6,216th place
3,860th place
265th place
450th place

adsabs.harvard.edu (Global: 14th place; English: 9th place)

ui.adsabs.harvard.edu

ams.org (Global: 434th place; English: 249th place)

mathscinet.ams.org

  • K. Appel and W. Haken (1977), "Every planar map is four colorable. Part I. Discharging", Illinois J. Math 21: 429490. MR 0543795
  • K. Appel, W. Haken, and J. Koch (1977), "Every planar map is four colorable. Part II. Reducibility", Illinois J. Math 21: 491567. MR 0543795

ams.org

arxiv.org (Global: 49th place; English: 31st place)

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

nih.gov (Global: 5th place; English: 5th place)

pubmed.ncbi.nlm.nih.gov

nobelprize.org (Global: 265th place; English: 450th place)

semanticscholar.org (Global: 15th place; English: 8th place)

api.semanticscholar.org

ucsf.edu (Global: 6,216th place; English: 3,860th place)

laplace.compbio.ucsf.edu

web.archive.org (Global: 1st place; English: 1st place)

worldcat.org (Global: 4th place; English: 4th place)

search.worldcat.org