@article{DE_1989_25_8_a20,
     author = {T. G. Amangil'din},
     title = {The regularized trace of the {Sturm--Liouville} operator},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1439--1441},
     publisher = {mathdoc},
     volume = {25},
     number = {8},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1989_25_8_a20/}
}