@article{VSPUI_2021_17_3_a2,
     author = {N. A. Moldovyan and A. A. Moldovyan},
     title = {Digital signature scheme on the $2 \times 2$ matrix algebra},
     journal = {Vestnik Sankt-Peterburgskogo universiteta. Prikladna\^a matematika, informatika, processy upravleni\^a},
     pages = {254--261},
     publisher = {mathdoc},
     volume = {17},
     number = {3},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/VSPUI_2021_17_3_a2/}
}