@article{1102983302,
author = {Gillman, David S.},
title = {Free curves in $E^{3}$.},
journal = {Pacific J. Math.},
volume = {31},
number = {3},
year = {1969},
pages = { 533-542},
language = {en},
url = {http://dml.mathdoc.fr/item/1102983302}
}
Gillman, David S. Free curves in $E^{3}$.. Pacific J. Math., Tome 31 (1969) no. 3, pp. 533-542. http://gdmltest.u-ga.fr/item/1102983302/