00619naa#a2200181#i#450# EN\\bibl\4249 20241010095707.4 2308-8877 20141113b2014####ek#y0engy0150####ca RUS RU Usage og the system of interactive geometry Geogebra for work with graphs Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2014 3 с. Journal article local Sitnikova Tatiana Vladimirovna Maleva A. naukaru.ru