Continuous optical monitoring during the prompt emission of GRB 060111B A. Klotz, B. Gendre, G. Stratta, J. L. Atteia, M. Boër, F. Malacrino, Y. Damerdji and R. Behrend A&A, 451 3 (2006) L39-L42 Published online: 04 May 2006 DOI: 10.1051/0004-6361:20065158