@article{VUU_2012_4_a9,
     author = {D. S. Burlakov and A. A. Seslavina},
     title = {On free movement of puck on horizontal plane},
     journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
     pages = {125--139},
     year = {2012},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VUU_2012_4_a9/}
}