@article{IVM_2011_2_a7,
     author = {K. B. Sabitov and N. V. Martem'yanova},
     title = {A nonlocal inverse problem for a~mixed-type equation},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {71--85},
     publisher = {mathdoc},
     number = {2},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2011_2_a7/}
}