00631naa#a2200181#i#450# EN\NORMA\bibl\17658 20260129032115.4 1605-6590 20170804b2017####ek#y0engy0150####ca RU On Problem of Discretionary Rules of Private and Public Law of Modern Russian Journal article Moscow Legal publishing house Norm 2017 12 с. Journal article local Право. Юридические науки. 34 Право. Юридические науки. 67 bbk Kozhevnikov Vladimir Valentinovich zh-szf.ru