@article{MVK_2015_6_1_a7,
     author = {V. N. Sachkov},
     title = {Combinatorial properties of differentially $2$-uniform substitutions},
     journal = {Matemati\v{c}eskie voprosy kriptografii},
     pages = {159--179},
     year = {2015},
     volume = {6},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MVK_2015_6_1_a7/}
}