%0 Journal Article %A G. A. Klekovkin %T Modeling the contours of plant leaves in the GeoGebra environment %J Matematičeskoe obrazovanie %D 2021 %P 48-57 %V 99 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MO_2021_99_3_a5/ %G ru %F MO_2021_99_3_a5