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@article{IVM_1991_12_a12, author = {V. A. Yurko}, title = {An inverse problem for differential operators on the half-axis}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {67--76}, publisher = {mathdoc}, number = {12}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1991_12_a12/} }
V. A. Yurko. An inverse problem for differential operators on the half-axis. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 12 (1991), pp. 67-76. http://geodesic.mathdoc.fr/item/IVM_1991_12_a12/