TY - JOUR AU - Watanabe, Shinzo TI - The existence of a multiple spider martingale in the natural filtration of a certain diffusion in the plane JO - Séminaire de probabilités de Strasbourg PY - 1999 SP - 277 EP - 290 VL - 33 PB - Springer - Lecture Notes in Mathematics UR - http://www.numdam.org/item/SPS_1999__33__277_0/ LA - en ID - SPS_1999__33__277_0 ER -