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@article{SPS_1977__11__490_0, author = {Walsh, John B.}, title = {A property of conformal martingales}, journal = {S\'eminaire de probabilit\'es de Strasbourg}, pages = {490--492}, publisher = {Springer - Lecture Notes in Mathematics}, volume = {11}, year = {1977}, mrnumber = {455114}, zbl = {0364.60078}, language = {en}, url = {http://geodesic.mathdoc.fr/item/SPS_1977__11__490_0/} }
Walsh, John B. A property of conformal martingales. Séminaire de probabilités de Strasbourg, Tome 11 (1977), pp. 490-492. http://geodesic.mathdoc.fr/item/SPS_1977__11__490_0/