TY  - JOUR
AU  - A. Lyakhov
TI  - Complexity of Problem Solving
JO  - Matematičeskoe obrazovanie
PY  - 2009
SP  - 27
EP  - 38
VL  - 51
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MO_2009_51_3_a3/
LA  - ru
ID  - MO_2009_51_3_a3
ER  -