00630naa#a2200169#i#450# EN\\bibl\124055 20260607035353.7 2073-1574 20260529b2026####ek#y0engy0150####ca RU Substantiation of the general topology and hierarchy of decision-making in the transportation planning system for mining vessels Journal article Astrakhan Astrakhan State Technical University 2026 6 с. Journal article local Виды перевозок. 656.614 регулярные. 656.614.32 Valkov Vladimir E. vestnik.astu.org