@article{JCEM_2015_2_4_a4,
     author = {S. N. Kakushkin and S. I. Kadchenko},
     title = {The calculation of values of eigenfunctions of the perturbed self-adjoint operators by regularized traces method},
     journal = {Journal of computational and engineering mathematics},
     pages = {48--60},
     publisher = {mathdoc},
     volume = {2},
     number = {4},
     year = {2015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JCEM_2015_2_4_a4/}
}