@article{DE_1990_26_9_a10,
     author = {V. V. Dubrovskii and A. V. Nagornyi},
     title = {On an inverse problem for the {Laplace} operator with continuous potential},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1563--1567},
     publisher = {mathdoc},
     volume = {26},
     number = {9},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1990_26_9_a10/}
}