TY - JOUR AU - Hamhalter, Jan TI - Orthogonal vector measures on projection lattices in a Hilbert space JO - Commentationes Mathematicae Universitatis Carolinae PY - 1990 SP - 655 EP - 660 VL - 31 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_1990__31_4_a5/ LA - en ID - CMUC_1990__31_4_a5 ER -