@article{TMF_1978_34_2_a3,
     author = {M. Kh. Khankhasaev},
     title = {Equation for the total scattering amplitude in the variable phase approach},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {170--179},
     publisher = {mathdoc},
     volume = {34},
     number = {2},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1978_34_2_a3/}
}