%0 Journal Article %A Chung, Kai Lai %T Pedagogic notes on the barrier theorem %J Séminaire de probabilités de Strasbourg %D 1977 %P 27-33 %V 11 %I Springer - Lecture Notes in Mathematics %U http://www.numdam.org/item/SPS_1977__11__27_0/ %G en %F SPS_1977__11__27_0