TY - JOUR AU - Kottwitz, Robert E. TI - Isocrystals with additional structure JO - Compositio Mathematica PY - 1985 SP - 201 EP - 220 VL - 56 IS - 2 PB - Martinus Nijhoff Publishers UR - http://www.numdam.org/item/CM_1985__56_2_201_0/ LA - en ID - CM_1985__56_2_201_0 ER -