TY - JOUR AU - Roberts, Leslie G. AU - Singh, Balwant TI - Subintegrality, invertible modules and the Picard group JO - Compositio Mathematica PY - 1993 SP - 249 EP - 279 VL - 85 IS - 3 PB - Kluwer Academic Publishers UR - http://www.numdam.org/item/CM_1993__85_3_249_0/ LA - en ID - CM_1993__85_3_249_0 ER -