@article{RM_1988_43_2_a1,
     author = {Yu. B. Orochko},
     title = {The hyperbolic equation method in the theory of operators of {Schr\"odinger} type with a locally integrable potential},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {51--102},
     publisher = {mathdoc},
     volume = {43},
     number = {2},
     year = {1988},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1988_43_2_a1/}
}