Multiple Periodic Variable Stars  proceedings of the international Astronomical Union colloquium no. 29 Multiple Periodic Variable Stars, held in Budapest, Hungary, 1–5 Sept.ember 1975 
edited by W. S. Fitch                                           
 - Budapest  Akademiai Kiado  1976 
 - [various pagings.] 
<br/><br/><label>ISBN: </label>963-05-1063-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and Astrophysics thesaurus<br/>Variable Stars
<br/><br/><label>Universal Decimal Class. No.: </label>082.2:52  / IAU-C29