Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1958_122_6_a1, author = {V. P. Glushko and S. G. Krein}, title = {Fractional powers of differential operators and the imbedding theorems}, journal = {Doklady Akademii Nauk}, pages = {963--966}, publisher = {mathdoc}, volume = {122}, number = {6}, year = {1958}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1958_122_6_a1/} }
V. P. Glushko; S. G. Krein. Fractional powers of differential operators and the imbedding theorems. Doklady Akademii Nauk, Tome 122 (1958) no. 6, pp. 963-966. http://geodesic.mathdoc.fr/item/DAN_1958_122_6_a1/