@article{ZNSL_2006_332_a1,
     author = {M. I. Belishev and A. F. Vakulenko},
     title = {On a control problem for the wave equation in~$\mathbf R^3$},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {19--37},
     publisher = {mathdoc},
     volume = {332},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2006_332_a1/}
}