@article{IVM_1999_2_a0,
     author = {N. V. Azbelev and M. J. Alves and E. I. Bravyi},
     title = {On singular boundary value problems for a second-order linear functional-differential equation},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {3--11},
     publisher = {mathdoc},
     number = {2},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1999_2_a0/}
}