@article{VMUMM_2001_3_a14,
     author = {T. V. Kozlova},
     title = {Systems admitting polynomial integrals of third and forth degrees (the case of elastic reflections)},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {69--71},
     year = {2001},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2001_3_a14/}
}