@article{TMF_1969_1_2_a3,
     author = {D. A. Slavnov},
     title = {On a~variant of $S$-matrix theory},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {200--212},
     publisher = {mathdoc},
     volume = {1},
     number = {2},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1969_1_2_a3/}
}