@article{DE_1997_33_4_a5,
     author = {M. Yu. Zhukov and L. I. Sazonov},
     title = {Asymptotics of the eigenvalues for a boundary value problem with $\delta$-like coefficients},
     journal = {Differencialʹnye uravneni\^a},
     pages = {470--477},
     publisher = {mathdoc},
     volume = {33},
     number = {4},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1997_33_4_a5/}
}