A new prescription for viscosity in Smoothed Particle Hydrodynamics S. J. Watkins, A. S. Bhattal, N. Francis, J. A. Turner and A. P. Whitworth Astron. Astrophys. Suppl. Ser., 119 1 (1996) 177-187 Published online: 15 October 1996 DOI: 10.1051/aas:1996104