TY - JOUR AU - T. Muramatsu TI - The Construction of a Rideable Geometric Object Based on a Conical Form: Regarding "Space Walk on the Earth" with Ellipsoidal Rolling Plane JO - Journal for geometry and graphics PY - 2011 SP - 203 EP - 212 VL - 15 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/JGG_2011_15_2_JGG_2011_15_2_a7/ ID - JGG_2011_15_2_JGG_2011_15_2_a7 ER -