1. Agerer F. & Hübscher J. , 1995, Inf. Bull. Variable Stars, 4222
2. Agerer F. & Hübscher J. , 1996, Inf. Bull. Variable Stars, 4383
3. Agerer F. & Hübscher J. , 1997, Inf. Bull. Variable Stars, 4472
4. Agerer F. & Hübscher J. , 1998, Inf. Bull. Variable Stars, 4562
5. Agerer F. & Hübscher J. , 1999, Inf. Bull. Variable Stars, 4711