00627naa#a2200193#i#450# EN\\bibl\37844 20260809021027.7 2500-3372 20200529b2020####ek#y0engy0150####ca RU Data Envelopment Analysis in Performance Assessment of Fuel and Energy Complex Enterprises Journal article Kemerovo Kemerovo State University 2020 11 с. Journal article local Pokushko Mariia Valerievna Stupina Alena Aleksandrovna Medina-Bulo Inmaculada Dresvianskii Egor Sergeevich zh-szf.ru