@article{DANMA_2021_500_a3,
     author = {V. A. Bykovskii},
     title = {Periodic ultradiscrete plane transformations},
     journal = {Doklady Rossijskoj akademii nauk. Matematika, informatika, processy upravleni\^a},
     pages = {23--25},
     year = {2021},
     volume = {500},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DANMA_2021_500_a3/}
}