@TechReport{HessBierPola06,
author = {Stephane Hess and Michel Bierlaire and John Polak },
title = {A systematic comparison of continuous and discrete mixture models},
institution = {Transport and Mobility Laboratory, Ecole Polytechnique F\'ed\'erale de Lausanne},
number = {TRANSP-OR 061117},
note = {Published as Hess, S., Bierlaire, M., and Polak, J. (2007). A systematic comparison of continuous and discrete mixture models, European Transport37():35-61},
year = {2006}
}