TY - JOUR A1 - Salo, H. A1 - Schmidt, Jürgen A1 - Spahn, Frank T1 - Viscous overstability in Saturn's B ring : I. Direct simulations and measurements of transport coefficients Y1 - 2001 ER - TY - JOUR A1 - Schmidt, Jürgen A1 - Salo, H. A1 - Spahn, Frank T1 - Viscous overstability in Saturn's B ring : II. Hydrodynamic theory and comparison to simulations Y1 - 2001 ER -