@article{PDMA_2018_11_a24,
     author = {B. A. Pogorelov and M. A. Pudovkina},
     title = {On nonabelian key addition groups and markovian block ciphers},
     journal = {Prikladnaya Diskretnaya Matematika. Supplement},
     pages = {79--81},
     publisher = {mathdoc},
     number = {11},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDMA_2018_11_a24/}
}