TY - JOUR AU - R.C. Cannings AU - M.P. Holland TI - Etale covers, bimodules and differential operators. JO - Mathematische Zeitschrift PY - 1994 SP - 179 EP - 194 VL - 216 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZ_1994__216_4_174645/ ID - MZ_1994__216_4_174645 ER -