@article{SM_1971_15_1_a4,
     author = {B. R. Vainberg},
     title = {On the principle of limiting amplitude},
     journal = {Sbornik. Mathematics},
     pages = {89--108},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {1971},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1971_15_1_a4/}
}