@article{FPM_2006_12_4_a2,
     author = {J. Ben Amara and A. A. Vladimirov},
     title = {On oscillation of eigenfunctions of a~fourth-order problem with spectral parameter in boundary condition},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {41--52},
     publisher = {mathdoc},
     volume = {12},
     number = {4},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2006_12_4_a2/}
}