TY - JOUR AU - Plymen, R. J. AU - Leung, C. W. TI - Arithmetic aspect of operator algebras JO - Compositio Mathematica PY - 1991 SP - 293 EP - 311 VL - 77 IS - 3 PB - Kluwer Academic Publishers UR - http://archive.numdam.org/item/CM_1991__77_3_293_0/ LA - en ID - CM_1991__77_3_293_0 ER -