00521naa#a2200169#i#450# EN\\bibl\5536 20240504195219.6 1995-042X 20141224b2014####ek#y0engy0150####ca RUS RU Contract enforcement for the contract for government needs Journal article CHERKIZOVO Russian State University of Tourism and Service 2014 11 с. Journal article local Chernyakova Svetlana Aleksandrovna rguts.editorum.ru