@article{EMJ_2010_1_2_a0,
     author = {A. M. Akhtyamov and V. A. Sadovnichy and Ya. T. Sultanaev},
     title = {Inverse problem for an operator pencil with nonseparated boundary conditions},
     journal = {Eurasian mathematical journal},
     pages = {5--16},
     publisher = {mathdoc},
     volume = {1},
     number = {2},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EMJ_2010_1_2_a0/}
}