@article{TMF_1972_10_2_a11,
     author = {L. V. Prokhorov},
     title = {Unitarity and the interaction of massless particles},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {264--270},
     publisher = {mathdoc},
     volume = {10},
     number = {2},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1972_10_2_a11/}
}