Ernst Öpik (English Wikipedia)

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

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arm.ac.uk

"Rocking Camera – Armagh Observatory". Archived from the original on 26 February 2013. Retrieved 26 August 2012.
"Rocking-mirror Meteor Camera – Armagh Observatory". Archived from the original on 4 March 2016. Retrieved 26 August 2012.

doi.org

Öpik, Ernst (December 1916). "The Densities of Visual Binary Stars". Astrophysical Journal. 44: 292–302. Bibcode:1916ApJ....44..292O. doi:10.1086/142296.
Öpik, Ernst (1922). "An estimate of the distance of the Andromeda Nebula". Astrophysical Journal. 55: 406–410. Bibcode:1922ApJ....55..406O. doi:10.1086/142680.
Öpik, Ernst (1936). "Meteor Heights from the Arizona Expedition". Proc Natl Acad Sci U S A. 22 (9): 525–530. Bibcode:1936PNAS...22..525O. doi:10.1073/pnas.22.9.525. PMC 1076809. PMID 16588103.

harvard.edu

ui.adsabs.harvard.edu

Öpik, Ernst (December 1916). "The Densities of Visual Binary Stars". Astrophysical Journal. 44: 292–302. Bibcode:1916ApJ....44..292O. doi:10.1086/142296.
Öpik, Ernst (1922). "An estimate of the distance of the Andromeda Nebula". Astrophysical Journal. 55: 406–410. Bibcode:1922ApJ....55..406O. doi:10.1086/142680.
Öpik, Ernst (1936). "Meteor Heights from the Arizona Expedition". Proc Natl Acad Sci U S A. 22 (9): 525–530. Bibcode:1936PNAS...22..525O. doi:10.1073/pnas.22.9.525. PMC 1076809. PMID 16588103.

adsabs.harvard.edu

"Fifty Years of the Irish Astronomical Journal" Fifty Years of the Irish Astronomical Journal, by A.G. Gunn & J. McFarland, Irish Astronomical Journal, vol. 27, iss. 1, p. 7 (2000)

nih.gov

ncbi.nlm.nih.gov

Öpik, Ernst (1936). "Meteor Heights from the Arizona Expedition". Proc Natl Acad Sci U S A. 22 (9): 525–530. Bibcode:1936PNAS...22..525O. doi:10.1073/pnas.22.9.525. PMC 1076809. PMID 16588103.

pubmed.ncbi.nlm.nih.gov

Öpik, Ernst (1936). "Meteor Heights from the Arizona Expedition". Proc Natl Acad Sci U S A. 22 (9): 525–530. Bibcode:1936PNAS...22..525O. doi:10.1073/pnas.22.9.525. PMC 1076809. PMID 16588103.

ut.ee

"Estonian technology to be part of the European Space Agency's mission for the first time, University of Tartu, 26.06.2019".

web.archive.org

"Rocking Camera – Armagh Observatory". Archived from the original on 26 February 2013. Retrieved 26 August 2012.
"Rocking-mirror Meteor Camera – Armagh Observatory". Archived from the original on 4 March 2016. Retrieved 26 August 2012.

worldcat.org

Öpik, Ernst Julius (1958). Physics of meteor flight in the atmosphere. New York: Interscience Publishers. OCLC 837979.