Dynamical modeling of large scale asymmetries in the β Picto ris dust disk J. C. Augereau, R. P. Nelson, A. M. Lagrange, J. C. B. Papaloizou and D. Mouillet A&A, 370 2 (2001) 447-455 Published online: 15 May 2001 DOI: 10.1051/0004-6361:20010199