@misc{MO_2015_3_a5,
     title = {P. {Nekrasov} and {Russian} secondary school of the end of the {XIX} cent. {Beginning} of the {XX} cent.},
     journal = {Matemati\v{c}eskoe obrazovanie},
     year = {2015},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2015_3_a5/}
}