@Article{NikBieLapSca_2018_TS,
author = {Marija Nikolic and Michel Bierlaire and Matthieu de Lapparent and Riccardo Scarinci },
title = {Multi-class speed-density relationship for pedestrian traffic},
journal = {Transportation Science},
volume = {53},
number = {3},
pages = {642-664},
doi = {10.1287/trsc.2018.0849},
year = {2019}
}