@article{DAN_1988_303_5_a3,
     author = {A. D. Iskenderov and G. Ya. Yagubov},
     title = {A variational method for solving an inverse problem of determining},
     journal = {Doklady Akademii Nauk},
     pages = {1044--1048},
     publisher = {mathdoc},
     volume = {303},
     number = {5},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1988_303_5_a3/}
}