@article{MM2_1990__67_1_155508, author = {Luisella Caire}, title = {Plane curves as projections of non singular space curves.}, journal = {Manuscripta mathematica}, pages = {433--450}, year = {1990}, volume = {67}, number = {1}, zbl = {0728.14030}, url = {http://geodesic.mathdoc.fr/item/MM2_1990__67_1_155508/} }