The techniques of visual, photographic and photoelectric measurement of variable stars are accompanied by specific examples of the type of scientific results th

From the reviews: Astronomy and Astrophysics Abstracts has appeared in semi-annual volumes since 1969 and it has already become one of the fundamental publicati

This book was first published in 2007. Variable stars are those that change brightness. Their variability may be due to geometric processes such as rotation, or

It is a pleasure to present this work, which has been well received in German-speaking countries through four editions, to the English-speaking reader. We feel