TY - JOUR AU - V. K. Gavrilov TI - About the task ``Knights of the King Arthur'' for developing multilevel tasks JO - Matematičeskoe obrazovanie PY - 2020 SP - 24 EP - 27 VL - 93 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MO_2020_93_1_a2/ LA - ru ID - MO_2020_93_1_a2 ER -