@article{MO_1997_2_a6,
     author = {M. M. Postnikov},
     title = {Necessary {Explanations} to the {Previous} {Article}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {100--107},
     year = {1997},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_1997_2_a6/}
}