00501naa#a2200181#i#450# EN\\bibl\6457 20240428093245.7 2073-0462 20150714b2015####ek#y0engy0150####ca RUS RU Method activation end date in the past. direction:re Journal article Kazan Kazan state agrarian University 2015 0 с. Journal article local Safiullin Anton Safina Gulnaz naukaru.ru