@article{VMUMM_1987_6_a12,
     author = {Yu. A. Skoblin},
     title = {A class of {Sturm--Liouville} operators on the semi-axis with a given spectrum},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {59--62},
     publisher = {mathdoc},
     number = {6},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1987_6_a12/}
}