00568naa#a2200169#i#450# EN\\bibl\100163 20251206025530.6 2221-3260 20250430b2025####ek#y0engy0150####ca RU Research on International Practices of Customs Valuation Systems and Directions for Their Development Journal article Yaroslavl Yaroslavl State Technical University 2025 13 с. Journal article local Sidorova Elena Yur'evna Burkhonov Saidali Saidvali Ugli chemintech.ru