TY  - JOUR
AU  - E. Potoskuev
TI  - On Necessity of Argument while Solving Stereometric Problems
JO  - Matematičeskoe obrazovanie
PY  - 2009
SP  - 11
EP  - 18
IS  - 4
UR  - http://geodesic.mathdoc.fr/item/MO_2009_4_a1/
LA  - ru
ID  - MO_2009_4_a1
ER  -