@article{DAN_1961_141_3_a22,
     author = {L. A. Khalfin},
     title = {Quantum theory of unstable elementary particles},
     journal = {Doklady Akademii Nauk},
     pages = {599--602},
     publisher = {mathdoc},
     volume = {141},
     number = {3},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_141_3_a22/}
}