00543naa#a2200169#i#450# EN\\bibl\125712 20260622093934.1 3034-4689 20260601b2026####ek#y0engy0150####ca RU THE IMPACT OF CATASTROPHIC FAILURES ON THE EFFECTIVENESS OF QS WITH UNEQUAL CHANNELS Journal article Kazan Kazan National Research Technological University 2026 4 с. Journal article local Galiullin Radmir Filyusovich Il'ina A. A. vestniktu.ru