TY - JOUR TI - A Problem (to be continued) JO - Matematičeskoe obrazovanie PY - 1998 SP - 68 VL - 4 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MO_1998_4_1_a4/ LA - ru ID - MO_1998_4_1_a4 ER -