Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1976_19_5_a11, author = {A. P. Khromov}, title = {Differential operator with irregular splitting boundary conditions}, journal = {Matemati\v{c}eskie zametki}, pages = {763--772}, publisher = {mathdoc}, volume = {19}, number = {5}, year = {1976}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1976_19_5_a11/} }
A. P. Khromov. Differential operator with irregular splitting boundary conditions. Matematičeskie zametki, Tome 19 (1976) no. 5, pp. 763-772. http://geodesic.mathdoc.fr/item/MZM_1976_19_5_a11/