@article{ZNSL_2020_493_a4,
     author = {M. I. Belishev and T. Sh. Khabibullin},
     title = {Characterization of data in dynamical inverse problem for the 1d wave equation with matrix potential},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {48--72},
     publisher = {mathdoc},
     volume = {493},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2020_493_a4/}
}