@article{VUU_2020_30_1_a1,
     author = {I. V. Izmest'ev},
     title = {Discrete game problem with ring-shaped terminal set},
     journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
     pages = {18--30},
     year = {2020},
     volume = {30},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VUU_2020_30_1_a1/}
}