@article{JGG_2011_15_2_JGG_2011_15_2_a7,
     author = {T. Muramatsu },
     title = {The {Construction} of a {Rideable} {Geometric} {Object} {Based} on a {Conical} {Form:} {Regarding} {"Space} {Walk} on the {Earth"} with {Ellipsoidal} {Rolling} {Plane}},
     journal = {Journal for geometry and graphics},
     pages = {203--212},
     publisher = {mathdoc},
     volume = {15},
     number = {2},
     year = {2011},
     url = {http://geodesic.mathdoc.fr/item/JGG_2011_15_2_JGG_2011_15_2_a7/}
}