@article{paperid:1027566,
author = {Saberi Fathi, Seyed Majid and M. Courbage},
title = {Computation of entropy increase for Lorentz gas and hard disks},
journal = {Communications in Nonlinear Science and Numerical Simulation},
year = {2008},
volume = {13},
number = {2},
month = {March},
issn = {1007-5704},
pages = {444--455},
			numpages = {11},
keywords = {Hard disk; Lorentz gas; entropy; Lyapounov exponents},
}