00490naa#a2200169#i#450# EN\NORMA\bibl\2920 20260307083627.6 1605-6590 20140918b2014####ek#y0engy0150####ca RUS RU Concretization in Law: Methodological Basics of Research Journal article Moscow Legal publishing house Norm 2014 15 с. Journal article local Vlasyenko Nikolay Aleksandrovich zh-szf.ru