@article{MM2_1990__68_2_155532,
     author = {Heinz Oberheim},
     title = {The {Tangent} {Surface} of a rational {Algebraic} {Space} {Curve.}},
     journal = {Manuscripta mathematica},
     pages = {343--350},
     publisher = {mathdoc},
     volume = {68},
     number = {2},
     year = {1990},
     zbl = {0722.14015},
     url = {http://geodesic.mathdoc.fr/item/MM2_1990__68_2_155532/}
}