%0 Journal Article %A Kazamaki, Norihiko %T A counterexample related to $A_p$-weights in martingale theory %J Séminaire de probabilités de Strasbourg %D 1985 %P 275-277 %V 19 %I Springer - Lecture Notes in Mathematics %U http://www.numdam.org/item/SPS_1985__19__275_0/ %G en %F SPS_1985__19__275_0