@article{TMF_1973_15_2_a1,
     author = {A. N. Vasil'ev and Yu. M. Pis'mak},
     title = {Unitarity of the {Wick} $T$-exponent},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {182--196},
     publisher = {mathdoc},
     volume = {15},
     number = {2},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1973_15_2_a1/}
}