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@article{MAN_1973__203_162424, author = {Ryotaro Sato}, title = {On the {Limit} of {Weighted} {Operator} {Averages.}}, journal = {Mathematische Annalen}, pages = {1--8}, publisher = {mathdoc}, volume = {203}, year = {1973}, zbl = {0243.47006}, url = {http://geodesic.mathdoc.fr/item/MAN_1973__203_162424/} }
Ryotaro Sato. On the Limit of Weighted Operator Averages.. Mathematische Annalen, Tome 203 (1973), pp. 1-8. http://geodesic.mathdoc.fr/item/MAN_1973__203_162424/