@article{FAA_1980_14_4_a22,
     author = {D. R. Yafaev},
     title = {Conditions for the unitarity of wave operators under a scattering by a nonstationary potential},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {91--92},
     publisher = {mathdoc},
     volume = {14},
     number = {4},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1980_14_4_a22/}
}