YY Boo, ein durch zufall entdeckter bedeckungsveraenderlicher mit pulsationskomponente.
YY CMi: contact or near contact system?
YY Draconis and V709 Cassiopeiae: two intermediate polars with weak magnetic fields
YY Draconis and V709 Cassiopeiae: two intermediate polars with weak magnetic fields
YY Eri & AE Phe (Maceroni+, 1994)
YY ERI revisited
YY Geminorum
YY Geminorum. I - Photometry and absolute dimensions
YY Geminorum: A Very Late Type Close Binary with Possible Magnetic Stellar Wind
YY Her Secondary Eclipses in the System Revealed
YY Her - Secondary Eclipses in the System Revealed
YY Her -- The primary eclipse in the system confirmed and a secondary one revealed
YY Her photometric history over 1890-1996 (Munari+ 1997)
YY Herculis
YY Herculis
YY Herculis
YY Herculis
YY Herculis
YY Herculis
YY Herculis