@article{MO_2007_42_2_a5,
     author = {S. G. Kal'nei},
     title = {So {Simple:} {A} {Manual} {Book} is {Guilty}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {58--59},
     publisher = {mathdoc},
     volume = {42},
     number = {2},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2007_42_2_a5/}
}