@article{RM_1963_18_5_a16,
     author = {R. S. Ismagilov},
     title = {On the self-adjointness of the {Sturm--Liouville} operator},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {18},
     number = {5},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1963_18_5_a16/}
}