@article{JGG_2008_12_2_JGG_2008_12_2_a6,
     author = {A. Kaestner },
     title = {Van de {Velde's} {Projects} {Virtual}},
     journal = {Journal for geometry and graphics},
     pages = {183--192},
     publisher = {mathdoc},
     volume = {12},
     number = {2},
     year = {2008},
     url = {http://geodesic.mathdoc.fr/item/JGG_2008_12_2_JGG_2008_12_2_a6/}
}