TY - JOUR AU - Z. Cerin TI - Homology and Orthology with Triangles for Central Points of Variable Flanks JO - Journal for geometry and graphics PY - 2003 SP - 001 EP - 022 VL - 7 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/JGG_2003_7_1_JGG_2003_7_1_a0/ ID - JGG_2003_7_1_JGG_2003_7_1_a0 ER -