00615naa#a2200181#i#450# EN\\bibl\127164 20260722095317.3 2073-5537 20260713b2026####ek#y0engy0150####ca RU Classification of risks of budgetary institutions in the field of procurement Journal article Astrakhan Astrakhan State Technical University 2026 7 с. Journal article local Экономический ущерб. 338.14 Bastrykin Sergey Vladimirovich Azhmullayeva Nailya Akramovna vestnik.astu.org