@article{PDMA_2013_6_a14,
     author = {V. A. Vitkup},
     title = {On the representation of {S-boxes} in block ciphers},
     journal = {Prikladnaya Diskretnaya Matematika. Supplement},
     pages = {30--32},
     publisher = {mathdoc},
     number = {6},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDMA_2013_6_a14/}
}