@article{Sitnikova2014usage,
author={Sitnikova, T.V. and Maleva, A..},
title={Usage og the system of interactive geometry Geogebra for work with graphs},
journal={Actual directions of scientific researches of the XXI century: theory and practice},
publisher={FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov},
year={2014},
pages={258-261},
volume={2},
issue={5},
}