The Be/X-ray transient 4U 0115+63/V635 Cassiopeiae - II. Outburst mechanisms I. Negueruela, A. T. Okazaki, J. Fabregat, M. J. Coe, U. Munari and T. Tomov A&A, 369 1 (2001) 117-131 Published online: 15 April 2001 DOI: 10.1051/0004-6361:20010077