Zwicky, F. «Die Rotverschiebung von extragalaktischen Nebeln». Helvetica Physica Acta, 6, 1933, p. 110–127. See also Zwicky, F. «On the Masses of Nebulae and of Clusters of Nebulae». Astrophysical Journal, 86, 1937, p. 217. DOI: 10.1086/143864.
Baade, W.; Zwicky, F. «On Super-Novae». Proceedings of the National Academy of Sciences, 20, 5, 1934, p. 254–259. DOI: 10.1073/pnas.20.5.254.
Baade, W.; Zwicky, F. «Cosmic Rays from Super-novae». Proceedings of the National Academy of Sciences, 20, 5, 1934, p. 259–263. DOI: 10.1073/pnas.20.5.259.
Hubble, E. «A Relation between Distance and Radial Velocity among Extra-Galactic Nebulae». Proceedings of the National Academy of Sciences, 15, 3, 1929, p. 168–173. DOI: 10.1073/pnas.15.3.168.
Zwicky, F. «On the Red Shift of Spectral Lines through Interstellar Space». Proceedings of the National Academy of Sciences, 15, 10, 1929, p. 773–779. DOI: 10.1073/pnas.15.10.773. (full article)
Baade, W. «The Period-Luminosity Relation of the Cepheids». Publications of the Astronomical Society of the Pacific, 68, 400, 1956, p. 5–16. DOI: 10.1086/126870.
Zwicky, F. «Nuclear Goblins and Flare Stars». Publications of the Astronomical Society of the Pacific, 70, octubre 1958, p. 506–508. DOI: 10.1086/127284.
Zwicky, F. «On the Possibility of Earth-Launched Meteors». Publications of the Astronomical Society of the Pacific, 58, agost 1946, p. 260–261. DOI: 10.1086/125840.
Zwicky, F. «Entdecken, Erfinden, Forschen im morphologischen Weltbild». Muenchen: Droemer, 1966. (page 237). This reference was identified from a footnote provided in an online essay: Knill, Oliver. «Moving the Solar System», novembre 1997. [Consulta: 17 juliol 2007].
Swiss-American Historical Society Newsletter, Volumes 42-43. The Society, 2006, p. 17. «Zwicky has dealt critically with religion during his whole life. A 1971 diary entry states: "To base the inexplainabilty and the immense wonder of nature upon another miracle, God, is unnecessary and not acceptable for any serious thinker." According to one story, Zwicky once discussed the beginning of the universe with a priest. The priest, quoting Scriptures, stated that the universe had started with "and there is light." Zwicky replied that he would buy this, if instead God had said "and there is electromagnetism".»
Zwicky, F. «On the Red Shift of Spectral Lines through Interstellar Space». Proceedings of the National Academy of Sciences, 15, 10, 1929, p. 773–779. DOI: 10.1073/pnas.15.10.773. (full article)