@article{VCHGU_2010_12_a0,
     author = {D. O. Degtyarev and S. V. Repjevskij},
     title = {Fredholm property of a boundary problem for differential equation of special form},
     journal = {Vestnik Chelyabinskogo Gosudarstvennogo Universiteta. Matematika, Mekhanika, Informatika},
     pages = {5--11},
     publisher = {mathdoc},
     number = {12},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VCHGU_2010_12_a0/}
}