@article{JGG_1997_1_1_a4,
     author = {K. Mende},
     title = {The {Representation} of {Pictorial} {Space} in {"Ukie"}},
     journal = {Journal for geometry and graphics},
     pages = {031--04},
     year = {1997},
     volume = {1},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/JGG_1997_1_1_a4/}
}