Tetsuo Asano. A New Transportation Problem on a Graph with Sending and Bringing-Back Operations. In Ryuhei Uehara, Seok-Hee Hong, Subhas C. Nandy, editors, WALCOM: Algorithms and Computation - 15th International Conference and Workshops, WALCOM 2021, Yangon, Myanmar, February 28 - March 2, 2021, Proceedings. Volume 12635 of Lecture Notes in Computer Science, pages 13-24, Springer, 2021. [doi]
Abstract is missing.