@TechReport{NikBieLapSca_MCVK_2017,
author = {Marija Nikolic and Michel Bierlaire and Matthieu de Lapparent and Riccardo Scarinci },
title = {Multi-class speed-density relationship for pedestrian traffic},
institution = {Transport and Mobility Laboratory, Ecole Polytechnique F\'ed\'erale de Lausanne},
number = {TRANSP-OR 170115},
year = {2017}
}