Searching for the sub-stellar companions in the LkCa15 proto-planetary diskM. Bonavita, G. Chauvin, A. Boccaletti, V. Pietu, P. Baudoz, J. L. Beuzit, A. Dutrey, S. Guilloteau, A. M. Lagrange, D. Mouillet and G. NiccoliniA&A, 522 (2010) A2DOI: https://doi.org/10.1051/0004-6361/200913292