TY - JOUR AU - H.-P. Schroecker TI - The Manifold of Planes that Intersect Four Straight Lines in Points of a Circle JO - Journal for geometry and graphics PY - 2004 SP - 59 EP - 68 VL - 8 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/JGG_2004_8_1_JGG_2004_8_1_a5/ ID - JGG_2004_8_1_JGG_2004_8_1_a5 ER -