@article{TMF_1998_116_3_a3,
     author = {N. A. Slavnov},
     title = {A~nonlinear identity for the scattering phase of integrable models},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {362--366},
     year = {1998},
     volume = {116},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1998_116_3_a3/}
}