Sign In

Login

Password

Forgot Password ? Sign Up

Ernst Öpik (Estonian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Ernst Öpik" in Estonian language version.

refsWebsite
Global rank Estonian rank
2harvard.edu
18th place
77th place
2doi.org
2nd place
16th place
1worldcat.org
5th place
76th place

doi.org

  • Öpik, Ernst (1916). "The Densities of Visual Binary Stars". ApJ. 44: 292–302. DOI:10.1086/142296. ISSN 0004-637X.
  • Öpik, Ernst (1922). "An estimate of the distance of the Andromeda Nebula". ApJ. 55: 406–410. DOI:10.1086/142680.

harvard.edu

adsabs.harvard.edu

  • Öpik, Ernst (1916). "The Densities of Visual Binary Stars". ApJ. 44: 292–302. DOI:10.1086/142296. ISSN 0004-637X.
  • Öpik, Ernst (1922). "An estimate of the distance of the Andromeda Nebula". ApJ. 55: 406–410. DOI:10.1086/142680.

worldcat.org

  • Öpik, Ernst (1916). "The Densities of Visual Binary Stars". ApJ. 44: 292–302. DOI:10.1086/142296. ISSN 0004-637X.