TY - JOUR AU - Frederico Xavier TI - Convexity and Absolute Continuity of the Laplace-Beltrami Operator. JO - Mathematische Annalen PY - 1988 SP - 579 EP - 586 VL - 282 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MAN_1988__282_2_164482/ ID - MAN_1988__282_2_164482 ER -