Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1958_119_5_a6, author = {A. V. Kuzhel'}, title = {The reduction of unbounded not self-adjoined operators to a triangular form}, journal = {Doklady Akademii Nauk}, pages = {868--871}, publisher = {mathdoc}, volume = {119}, number = {5}, year = {1958}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1958_119_5_a6/} }
A. V. Kuzhel'. The reduction of unbounded not self-adjoined operators to a triangular form. Doklady Akademii Nauk, Tome 119 (1958) no. 5, pp. 868-871. http://geodesic.mathdoc.fr/item/DAN_1958_119_5_a6/