Carl Keenan Seyfert (Dutch Wikipedia)

Analysis of information sources in references of the Wikipedia article "Carl Keenan Seyfert" in Dutch language version.

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archive.org

C. K. Seyfert (1943). Nuclear Emission in Spiral Nebulae. Astrophysical Journal 97: 28–40. DOI: 10.1086/144488.

doi.org

C. K. Seyfert (1943). Nuclear Emission in Spiral Nebulae. Astrophysical Journal 97: 28–40. DOI: 10.1086/144488.