@article{VMUMM_1982_3_a0,
     author = {A. I. Vagabov},
     title = {On the multiple completeness of eigenfunctions and adjoint functions for ordinary differential bundles with irregular boundary conditions},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {3--6},
     year = {1982},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1982_3_a0/}
}