Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MAN_1967__172_161581, author = {J\"orgen L\"ofstr\"om}, title = {Some {Theorems} on {Interpolation} {Spaces} with {Applications} to {Approximation} in {L} p}, journal = {Mathematische Annalen}, pages = {176--196}, publisher = {mathdoc}, volume = {172}, year = {1967}, zbl = {0186.45701}, url = {http://geodesic.mathdoc.fr/item/MAN_1967__172_161581/} }
Jörgen Löfström. Some Theorems on Interpolation Spaces with Applications to Approximation in L p. Mathematische Annalen, Tome 172 (1967), pp. 176-196. http://geodesic.mathdoc.fr/item/MAN_1967__172_161581/