@article{PDMA_2014_7_a2,
     author = {V. A. Vitkup},
     title = {On some open questions about {APN} functions},
     journal = {Prikladnaya Diskretnaya Matematika. Supplement},
     pages = {11--13},
     year = {2014},
     number = {7},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDMA_2014_7_a2/}
}