00703naa#a2200193#i#450# EN\\bibl\119545 20260609043929.2 2588-0209 20260421b2026####ek#y0engy0150####ca RU MARKET ANALYSIS OF THE RYAZAN REGION MEAT INDUSTRY USING MICHAEL PORTER'S COMPETITIVE FORCES MODEL Journal article Moscow Electronic science 2026 19 с. Journal article local Исследование конъюнктуры. Прогнозы конъюктуры. 338.12.017 Afanasyeva Yuliya Stanislavovna Kostrova Yuliya Borisovna Shibarshina Olga Yurevna e-integral.ru