@article{TMF_1978_35_1_a1,
     author = {V. D. Gordevskii and V. A. Shcherbina},
     title = {Renormalized system of equations for vertex functions of the chronological exponential},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {14--23},
     publisher = {mathdoc},
     volume = {35},
     number = {1},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1978_35_1_a1/}
}