@article{1102734672, author = {Whitten, Wilbur}, title = {Inverting double knots.}, journal = {Pacific J. Math.}, volume = {97}, number = {2}, year = {1981}, pages = { 209-216}, language = {en}, url = {http://dml.mathdoc.fr/item/1102734672} }
Whitten, Wilbur. Inverting double knots.. Pacific J. Math., Tome 97 (1981) no. 2, pp. 209-216. http://gdmltest.u-ga.fr/item/1102734672/