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@article{MZ_1975__143_172207, author = {Mustafa Akcoglu}, title = {Positive {Contractions} of {L2-Spaces.}}, journal = {Mathematische Zeitschrift}, pages = {5--14}, publisher = {mathdoc}, volume = {143}, year = {1975}, zbl = {0307.47005}, url = {http://geodesic.mathdoc.fr/item/MZ_1975__143_172207/} }
Mustafa Akcoglu. Positive Contractions of L2-Spaces.. Mathematische Zeitschrift, Tome 143 (1975), pp. 5-14. http://geodesic.mathdoc.fr/item/MZ_1975__143_172207/