@article{GDZPPN002415836, title = {Positive Contractions of L2-Spaces.}, journal = {Mathematische Zeitschrift}, volume = {142}, year = {1975}, pages = {5-14}, zbl = {0307.47005}, url = {http://dml.mathdoc.fr/item/GDZPPN002415836} }
Akcoglu, Mustafa. Positive Contractions of L2-Spaces.. Mathematische Zeitschrift, Tome 142 (1975) pp. 5-14. http://gdmltest.u-ga.fr/item/GDZPPN002415836/