@article{DAN_1965_165_3_a21,
     author = {L. A. Khalfin},
     title = {A contribution to the quantum theory of unstable elementary particles},
     journal = {Doklady Akademii Nauk},
     pages = {541--544},
     publisher = {mathdoc},
     volume = {165},
     number = {3},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_165_3_a21/}
}