@TechReport{SorcRobiCruzBierThir09,
author = {Matteo Sorci and Thomas Robin and Javier Cruz and Michel Bierlaire and Jean-Philippe Thiran },
title = {Modelling human perception of facial expressions},
institution = {Transport and Mobility Laboratory, Ecole Polytechnique F\'ed\'erale de Lausanne},
number = {TRANSP-OR 090706},
year = {2009}
}