00586naa#a2200169#i#450# EN\\bibl\2873 20241212034728.4 2308-8877 20140616b2014####ek#y0engy0150####ca RUS RU Optimal control problems for elliptic equations with control in the coefficients Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2014 2 с. Journal article local Kasymova R. anni.editorum.ru