Mathematical Optimization Theory and Operations Research 18th International Conference, MOTOR 2019, Ekaterinburg, Russia, July 8 - 12, 2019, Revised Selected Papers - Bykadorov, Igor; Bykadorov, Igor; Strusevich, Vitaly; Strusevich, Vitaly; Tchemisova, Tatiana; Tchemisova, Tatiana (Springer International Publishing : Imprint: Springer, 2019)