@article{DAN_1975_221_1_a17,
     author = {Yu. S. Tyupkin and V. A. Fateev and A. S. Schwarz},
     title = {On classical limit of scattering matrix in the quantum field theory},
     journal = {Doklady Akademii Nauk},
     pages = {70--73},
     publisher = {mathdoc},
     volume = {221},
     number = {1},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1975_221_1_a17/}
}