ZHU X, FENG X, ZHANG L, HUA W. Optimizations of network layout and transport service frequencies in view of interests of transit line operators and utilizers. AoT [Internet]. 2019 Jun. 30 [cited 2024 Dec. 30];50(2):47-55. Available from: https://archivesoftransport.com/index.php/aot/article/view/579