Yoshiaki Katada Shinya Watanabe Kazuhiro Ohkura Evolutionary multi-objective optimization with the heuristic solver for multiple traveling salesman problem. 2026 February 280-293 31 Artif. Life Robotics 1 https://doi.org/10.1007/s10015-025-01098-y db/journals/alr/alr31.html#KatadaWO26 streams/journals/alr