@article{JGG_1999_3_2_a8,
     author = {X. Sun and K. Suzuki},
     title = {Evaluation of {Educational} {Effects} of the {Solid} {Simulator}},
     journal = {Journal for geometry and graphics},
     pages = {219--226},
     year = {1999},
     volume = {3},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/JGG_1999_3_2_a8/}
}