TY - JOUR AU - H. Stachel TI - Canal Surfaces Containing Four Straight Lines JO - Journal for geometry and graphics PY - 2024 SP - 137 EP - 154 VL - 28 IS - 2 UR - http://geodesic.mathdoc.fr/item/JGG_2024_28_2_JGG_2024_28_2_a0/ ID - JGG_2024_28_2_JGG_2024_28_2_a0 ER -