TY - JOUR AU - Lávička, Roman TI - The Lévy laplacian and differential operators of 2-nd order in Hilbert spaces JO - Commentationes Mathematicae Universitatis Carolinae PY - 1998 SP - 115 EP - 135 VL - 39 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_1998__39_1_a12/ LA - en ID - CMUC_1998__39_1_a12 ER -