00565naa#a2200169#i#450# EN\\bibl\2998 20241203153137.2 2219-0767 20140808b2014####ek#y0engy0150####ca RUS RU Constructive foundations of real equations with differential operator Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2014 9 с. Journal article local Kotov P. zh-szf.ru