@article{VMUMM_1982_6_a3,
     author = {A. A. Shkalikov},
     title = {Basis property of eigenfunctions of ordinary differential operators with integral boundary conditions},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {12--21},
     publisher = {mathdoc},
     number = {6},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1982_6_a3/}
}