Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1992_323_5_a2, author = {V. A. Derkach and M. M. Malamud}, title = {Characteristic functions of linear operators}, journal = {Doklady Akademii Nauk}, pages = {816--822}, publisher = {mathdoc}, volume = {323}, number = {5}, year = {1992}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1992_323_5_a2/} }
V. A. Derkach; M. M. Malamud. Characteristic functions of linear operators. Doklady Akademii Nauk, Tome 323 (1992) no. 5, pp. 816-822. http://geodesic.mathdoc.fr/item/DAN_1992_323_5_a2/