@article{VMUMM_1990_5_a21,
     author = {A. M. Abdrahmanov},
     title = {Integrable systems with elastic reflections},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {85--88},
     year = {1990},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1990_5_a21/}
}