00602naa#a2200181#i#450# EN\\bibl\52226 20240826060046.1 2072-9502 20220728b2022####ek#y0engy0150####ca RU Fuzzy models in investment planning Journal article Astrakhan Astrakhan State Technical University 2022 9 с. Journal article local Теория экономико-математических моделей. 519.86 Fyedorova Natalya Vasilevna Akperov Imran Gurruevich vestnik.astu.org