- Nicholas N. Olenev, Yuri G. Evtushenko, Milojica Jacimovic, Michael Yu. Khachay, Vlasta Malkova, editors, Optimization and Applications - 12th International Conference, OPTIMA 2021, Petrovac, Montenegro, September 27 - October 1, 2021, Proceedings. Volume 13078 of Lecture Notes in Computer Science, Springer, 2021.