@article{GDZPPN002036606,
title = {The Gauss code problem off the plane.},
journal = {Aequationes mathematicae},
volume = {33},
year = {1987},
pages = {81-95},
zbl = {0591.05024},
url = {http://dml.mathdoc.fr/item/GDZPPN002036606}
}
Lins, S.; Richter, B.; Shank, H. The Gauss code problem off the plane.. Aequationes mathematicae, Tome 33 (1987) pp. 81-95. http://gdmltest.u-ga.fr/item/GDZPPN002036606/