00504naa#a2200169#i#450# EN\\bibl\103429 20251009085141.4 2782-4586 20250904b2025####ek#y0engy0150####ca RU Comparative analysis of data sources for back-testing cost estimation models Journal article Moscow ITBO University 2025 5 с. Journal article local Понятия. 336.011 Lihenko Ivan Ivanovich jomeam.ru