@article{TMF_2006_149_2_a2,
     author = {D. V. Prokhorenko},
     title = {$ABC$ formula and $R$-operation for quantum processes with unstable states},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {183--201},
     publisher = {mathdoc},
     volume = {149},
     number = {2},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2006_149_2_a2/}
}