%0 Journal Article %A Gerold Alsmeyer %T A recurrence theorem for square-integrable martingales %J Studia Mathematica %D 1994 %P 221-234 %V 110 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-110-3-221-234/ %R 10.4064/sm-110-3-221-234 %G en %F 10_4064_sm_110_3_221_234