The Be/X-ray transient 4U 0115+63/V635 Cassiopeiae - III. Quasi-cyclic variability P. Reig, V. Larionov, I. Negueruela, A. A. Arkharov and N. A. Kudryavtseva A&A, 462 3 (2007) 1081-1089 Published online: 13 November 2006 DOI: 10.1051/0004-6361:20066217