@article{MO_1999_a6,
     author = {R. Z. Gushel'},
     title = {100 {Years} {Ago:} {On} {Russian} {Congresses} of {Math} {Teachers}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {150--166},
     publisher = {mathdoc},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_1999_a6/}
}