@article{MAT_1963_7_4_a5,
     author = {T. Regge},
     title = {Analytic properties of the scattering matrix},
     journal = {Matematika},
     pages = {83--90},
     publisher = {mathdoc},
     volume = {7},
     number = {4},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAT_1963_7_4_a5/}
}