Partoune, C., & Peeters, D. (1980). UN MOD�LE DE LOCALISATION DES BUREAUX DE POSTE: Une application � la Ville de Li�ge. Annals of Public and Co-operative Economy, 51(1-2), 53-68. https://doi.org/10.1111/j.1467-8292.1980.tb01768.x (Original work published 1980)