@article{TMF_1978_36_1_a3,
     author = {I. V. Amirkhanov and G. V. Grusha and R. M. Mir-Kassimov},
     title = {Variable phase method for quasipotential equation in terms of rapidities},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {42--52},
     publisher = {mathdoc},
     volume = {36},
     number = {1},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1978_36_1_a3/}
}