@article{SM_1992_72_2_a0,
     author = {S. A. Avdonin and M. I. Belishev and S. A. Ivanov},
     title = {Boundary control and a~matrix inverse problem for the equation $u_{tt}-u_{xx}+V(x)u=0$},
     journal = {Sbornik. Mathematics},
     pages = {287--310},
     year = {1992},
     volume = {72},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1992_72_2_a0/}
}