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@article{MZM_1980_28_3_a5, author = {L. V. Bogachev}, title = {Trace of the {Sturm--Liouville} operator with nonlocal boundary conditions}, journal = {Matemati\v{c}eskie zametki}, pages = {379--390}, publisher = {mathdoc}, volume = {28}, number = {3}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1980_28_3_a5/} }
L. V. Bogachev. Trace of the Sturm--Liouville operator with nonlocal boundary conditions. Matematičeskie zametki, Tome 28 (1980) no. 3, pp. 379-390. http://geodesic.mathdoc.fr/item/MZM_1980_28_3_a5/