@article{TMF_1972_10_2_a9,
     author = {I. M. Sigal},
     title = {Reduction to diagonal form of the {Schr\"} odinger operator in {Fok} space},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {249--258},
     publisher = {mathdoc},
     volume = {10},
     number = {2},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1972_10_2_a9/}
}