D'Addetta, G.,
Kun, F., Ramm, E., Herrmann, H.:
From solids to granulates: discrete element simulations of fracture and fragmentation processes in geomaterials.
In: Continuous and discontinuous modelling of cohesive frictional materials: Lecture Notes in Physics. Ed.: Pieter A. Vermeer, Hans J. Herrmann, Stefan Luding, Wolfgang Ehlers, Stefan Diebels, Ekkehard Ramm, Springer-Verlag, Berlin, 231-258, 2001, (Lecture Notes in Physics) ISBN: 9783540415251