@article{JGG_1997_1_2_a6,
     author = {B. Chilla},
     title = {Virtual {Movement} {Through} {Planar} {Geometry:} {Fundamental} {Concepts} in {Visual} {Art}},
     journal = {Journal for geometry and graphics},
     pages = {169--178},
     publisher = {mathdoc},
     volume = {1},
     number = {2},
     year = {1997},
     url = {http://geodesic.mathdoc.fr/item/JGG_1997_1_2_a6/}
}