@article{TMF_1985_65_2_a2,
     author = {R. L. Mkrtchyan},
     title = {Diagram technique in field theory at finite temperature},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {181--191},
     year = {1985},
     volume = {65},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1985_65_2_a2/}
}