00508naa#a2200181#i#450# EN\\bibl\582 20241120032523.3 1992-5980 20130930b2013####ek#y0engy0150####ca RUS RU Methodological basis for creation of economic unions Journal article rostov on don Don state technical University 2013 6 с. Journal article local Anisimov E. G. Saurenko Tatyana N. zh-szf.ru