@article{RM_1995_50_6_a30,
     author = {S. A. Stepin},
     title = {Non-self-conjugate singular perturbations: a~model of transition from a~discrete to a~continuous spectrum},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {1311--1313},
     publisher = {mathdoc},
     volume = {50},
     number = {6},
     year = {1995},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1995_50_6_a30/}
}