@article{MO_2009_52_4_a1,
     author = {E. Potoskuev},
     title = {On {Necessity} of {Argument} while {Solving} {Stereometric} {Problems}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {11--18},
     publisher = {mathdoc},
     volume = {52},
     number = {4},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2009_52_4_a1/}
}