00525naa#a2200181#i#450# EN\\bibl\92061 20260620040513.6 3034-4689 20241125b2024####ek#y0engy0150####ca RU MULTIFRACTAL ANALYSIS OF DISPERSED POLYMETALLIC SYSTEMS Journal article Kazan Kazan National Research Technological University 2024 5 с. Journal article local Dresvyannikov Aleksandr Fedorovich vestniktu.ru