%0 Journal Article %A V. B. Drozdov %T Three Noteson Solving Mathematical Problems %J Matematičeskoe obrazovanie %D 2004 %P 2-18 %V 31 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MO_2004_31_4_a0/ %G ru %F MO_2004_31_4_a0