@article{TM_2016_294_a15,
     author = {I. V. Volovich and S. V. Kozyrev},
     title = {Manipulation of states of a~degenerate quantum system},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {256--267},
     year = {2016},
     volume = {294},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2016_294_a15/}
}