00465naa#a2200169#i#450# EN\NORMA\bibl\1133 20251226053229.5 1605-6590 20140120b2014####ek#y0engy0150####ca RUS RU Solidary Obligations in the Russian Civil Law Journal article Moscow Legal publishing house Norm 2014 6 с. Journal article local Shevchenko Galina naukaru.ru