Chugay, Andriy, and Yurii Stoian. “CLUSTER PACKING OF CONCAVE NON-ORIENTED POLYHEDRA IN A CUBOID”. Advanced Information Systems 2, no. 1 (May 27, 2018): 16–21. Accessed May 7, 2024. http://ais.khpi.edu.ua/article/view/2522-9052.2018.1.03.