@article{DAN_1972_206_6_a8,
     author = {B. S. Pavlov},
     title = {Continuous resonance spectrum on a nonphysical sheet},
     journal = {Doklady Akademii Nauk},
     pages = {1301--1304},
     publisher = {mathdoc},
     volume = {206},
     number = {6},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_206_6_a8/}
}