| A Ritzian Interpretation of Variable Stars: A study on the nature of the speed of light in space using light curves and spectroscopic observations of variable stars as evidence. |
| American Association of Variable Star Observers: The largest organization for variable stars: provides professional and amateur collaboration, research, and analysis of variable star observations. |
| Astronomical Society of South Australia: ASSA's variable star group. News, FAQ, charts, and software. |
| Astronomy On-Line: Collaborative Project aimed at getting new people involved in variable star observing. |
| Brigham Young University Variable Star Database: Currently contains 311 stars which have been classified as Delta Scutis or Gamma Doradus in some published source. |
| General Catalog of Variable Stars Research Group: Research group working on the GCVS, Sternberg Astronomical Institute, Moscow, Russia. Includes catalogs and publications. |
| Information Bulletin on Variable Stars: The IBVS is a bulletin of Commissions 27 and 42 of the International Astronomical Union, published by Konkoly Observatory, Budapest, Hungary. |
| Skyandtelescope.com - Variable Stars: Observing variable stars. |
| The Cepheid Distance Scale: A History: A critical review of the Cepheid distance scale, from its inception, to the Hipparcos mission and beyond. |
| The Minima of Algol: An article by Alan MacRobert from Sky and Telescope Magazine about the star Algol (Beta Persei) was the first eclipsing variable star ever discovered. |
| The Top Twelve Naked-Eye Variable Stars: An article by John Isles from Sky and Telescope Magazine. |
Classical
