@article{JGG_1999_3_1_a9,
     author = {K. Takeyama and R. Maeguchi and K. Chibana and K. Yoshida:},
     title = {Evaluation of {Objective} {Test} {Using} a {Pair} of {Orthographic} {Projections} for {Descriptive} {Geometry} {Education}},
     journal = {Journal for geometry and graphics},
     pages = {099--11},
     publisher = {mathdoc},
     volume = {3},
     number = {1},
     year = {1999},
     url = {http://geodesic.mathdoc.fr/item/JGG_1999_3_1_a9/}
}