@article{1177697119, author = {Walk, Harro}, title = {Convergence Properties of Martingale Transforms}, journal = {Ann. Math. Statist.}, volume = {41}, number = {6}, year = {1970}, pages = { 706-709}, language = {en}, url = {http://dml.mathdoc.fr/item/1177697119} }
Walk, Harro. Convergence Properties of Martingale Transforms. Ann. Math. Statist., Tome 41 (1970) no. 6, pp. 706-709. http://gdmltest.u-ga.fr/item/1177697119/