00580naa#a2200181#i#450# EN\NORMA\bibl\40005 20241003173412.4 1605-6590 20201021b2020####ek#y0engy0150####ca RU Ways to Improve the Efficiency of Anti-Corruption in the Field of Corporate Procurement Journal article Moscow Legal publishing house Norm 2020 0 с. Journal article local Право. Юридические науки. 34 Belyaeva Olga Tsirin Artem zh-szf.ru