TY - THES A1 - Hertzsch, Jan-Martin T1 - Über nichtelastische Kollisionen und ihren Einfluß auf die Strukturbildung in planetaren Ringen Y1 - 1996 ER - TY - BOOK A1 - Spahn, Frank A1 - Hertzsch, Jan-Martin A1 - Brilliantov, Nikolai V. T1 - The role of particle collisions for the dynamics in planetary rings T3 - Preprint NLD Y1 - 1995 VL - 14 PB - Univ. CY - Potsdam ER - TY - JOUR A1 - Scholl, H. A1 - Spahn, Frank A1 - Hertzsch, Jan-Martin A1 - Katzorke, Ines T1 - Simulation of collisions in planetary rings Y1 - 1997 ER - TY - JOUR A1 - Spahn, Frank A1 - Petzschmann, Olaf A1 - Schmidt, Jürgen A1 - Sremcevic, Miodrag A1 - Hertzsch, Jan-Martin T1 - About the viscosity of granular gases : the force-free case versus granular gases under Keplarian differential rotation Y1 - 2001 SN - 3-540-41458-4 ER -