@article{TM_2001_232_a12,
     author = {V. A. Il'in},
     title = {Boundary {Control} of {Spherically} {Symmetric} {Oscillations} of {a~Three-Dimensional} {Ball}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {144--155},
     publisher = {mathdoc},
     volume = {232},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2001_232_a12/}
}