@article{1200789208, author = {Nakamura, Takuji}, title = {Four-genus and unknotting number of positive knots and links}, journal = {Osaka J. Math.}, volume = {37}, number = {1}, year = {2000}, pages = { 441-451}, language = {en}, url = {http://dml.mathdoc.fr/item/1200789208} }
Nakamura, Takuji. Four-genus and unknotting number of positive knots and links. Osaka J. Math., Tome 37 (2000) no. 1, pp. 441-451. http://gdmltest.u-ga.fr/item/1200789208/