@article{PDMA_2015_8_a21,
     author = {A. M. Karondeev},
     title = {Addition modulo $2^n$ in block ciphers},
     journal = {Prikladnaya Diskretnaya Matematika. Supplement},
     pages = {62--63},
     publisher = {mathdoc},
     number = {8},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDMA_2015_8_a21/}
}