@article{IVM_1958_6_a19,
     author = {S. B. Norkin},
     title = {On a~boundary problem of {Sturm-Liouville} type for a~second-order differential equation with a~retarded argument},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {203--214},
     publisher = {mathdoc},
     number = {6},
     year = {1958},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1958_6_a19/}
}