TY - JOUR AU - G. A. Klekovkin TI - Modeling the contours of plant leaves in the GeoGebra environment JO - Matematičeskoe obrazovanie PY - 2021 SP - 5 EP - 17 IS - 2 UR - http://geodesic.mathdoc.fr/item/MO_2021_2_a1/ LA - ru ID - MO_2021_2_a1 ER -