@article{UFA_2011_3_2_a3,
     author = {N. S. Imanbaev and M. A. Sadybekov},
     title = {Stability of basis property of a~type of problems on eigenvalues with nonlocal perturbation of boundary conditions},
     journal = {Ufa mathematical journal},
     pages = {27--32},
     publisher = {mathdoc},
     volume = {3},
     number = {2},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UFA_2011_3_2_a3/}
}