@article{JGG_2005_9_2_JGG_2005_9_2_a5,
     author = {K. Kondo and H. Shizuka and W. Liu and K. Matsuda },
     title = {A {Sketch} {Interpreter} {System} with {Shading} and {Cross} {Section} {Lines}},
     journal = {Journal for geometry and graphics},
     pages = {177--189},
     publisher = {mathdoc},
     volume = {9},
     number = {2},
     year = {2005},
     url = {http://geodesic.mathdoc.fr/item/JGG_2005_9_2_JGG_2005_9_2_a5/}
}