TY  - JOUR
AU  - E. Potoskuev
TI  - Reference Problems and Theorems for Computing of Areas of Triangles and Quadrangles
JO  - Matematičeskoe obrazovanie
PY  - 2009
SP  - 31
EP  - 40
IS  - 2
UR  - http://geodesic.mathdoc.fr/item/MO_2009_2_a4/
LA  - ru
ID  - MO_2009_2_a4
ER  -