The Net Advance of Physics:
History and Philosophy: Cepheid Variable Stars

• Variable Stars [Royal Astronomical Society of Canada]
• The cepheid Distance Scale: A History Nick Allen, 2009 [History of Brilliant Failures.com]
• cepheid Variable Stars and Distance Determination, 2004 [Australian Telescope Outreach and Education]
• Wikipedia
• Amateur Observers of Variable Stars in the United States from 1875 to 1910 Journal of the AAVSO, 1999. [American Association of Variable Star Observers]
• The Star that Changed our Universe, Kelly Beatty, 2011. [Sky and Telescope]
• Women in the History of Variable Star Astronomy, Dorrit Hoffleit, 1993. (PDF) [American Association of Variable Star Observers]
• British Variable Star Associations, 1848-1908, John Toone, 2008. (PDF)
• The Names and Catalogues of Variable Stars, Emile Schweitzer (translated by Jacques Vialle). [Association Françl;aise des Observatoeurs d"Etoiles Variable]
• John Goodricke, Edward Pigott, and Their Study of Variable Stars, L. M. French, 2012/04

See also Variable Stars at the Net Advance of Physics