@article{RM_2000_55_6_a18,
     author = {A. M. Savchuk},
     title = {First-order regularised trace of the {Sturm--Liouville} operator with $\delta$-potential},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {1168--1169},
     publisher = {mathdoc},
     volume = {55},
     number = {6},
     year = {2000},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2000_55_6_a18/}
}