Mathematical modeling of a bi-objective hub location-routing problem for rapid transit networksMalihe Fallah-Tafti, Mahboobeh Honarvar, Reza Tavakkoli-Moghaddam and Ahmad SadegheihRAIRO-Oper. Res., 56 5 (2022) 3733-3763DOI: https://doi.org/10.1051/ro/2022170