Connection between orbital modulation of Hα and gamma-rays in the Be/X-ray binary LS I+61°303 R. Zamanov, J. Martí, K. Stoyanov, A. Borissova and N. A. Tomov A&A, 561 (2014) L2 Published online: 20 December 2013 DOI: 10.1051/0004-6361/201322936