00468naa#a2200169#i#450# EN\NORMA\bibl\11226 20250311084624.2 1605-6590 20160411b2016####ek#y0engy0150####ca RUS RU On Absolute Legal Force of Obligations Journal article Moscow Legal publishing house Norm 2016 0 с. Journal article local Kasatkin Sergey Nikolaevich naukaru.ru