TY - JOUR AU - O'Brian, N. R. TI - Geometry of twisting cochains JO - Compositio Mathematica PY - 1987 SP - 41 EP - 62 VL - 63 IS - 1 PB - Martinus Nijhoff Publishers UR - http://archive.numdam.org/item/CM_1987__63_1_41_0/ LA - en ID - CM_1987__63_1_41_0 ER -