Constraints on planets around β Pic with Harps radial velocity data A.-M. Lagrange, K. De Bondt, N. Meunier, M. Sterzik, H. Beust and F. Galland A&A, 542 (2012) A18 Published online: 25 May 2012 DOI: 10.1051/0004-6361/201117985