Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1984_20_8_a24, author = {M. G. Zavgorodnii}, title = {The spectrum of a multipoint boundary value problem}, journal = {Differencialʹnye uravneni\^a}, pages = {1443--1444}, publisher = {mathdoc}, volume = {20}, number = {8}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1984_20_8_a24/} }
M. G. Zavgorodnii. The spectrum of a multipoint boundary value problem. Differencialʹnye uravneniâ, Tome 20 (1984) no. 8, pp. 1443-1444. http://geodesic.mathdoc.fr/item/DE_1984_20_8_a24/