@article{ZNSL_1992_203_a3,
     author = {M. I. Belishev and A. P. Katchalov},
     title = {Boundary controls and quasiphotons in {a~Riemannian} manifold reconstruction problem via dynamical data},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {21--50},
     publisher = {mathdoc},
     volume = {203},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1992_203_a3/}
}