TY - JOUR AU - Phillips, John AU - Raeburn, Iain TI - Centre-valued Index for Toeplitz Operators with Noncommuting Symbols JO - Canadian journal of mathematics PY - 2016 SP - 1023 EP - 1066 VL - 68 IS - 5 UR - http://geodesic.mathdoc.fr/articles/10.4153/CJM-2015-038-7/ DO - 10.4153/CJM-2015-038-7 ID - 10_4153_CJM_2015_038_7 ER -