@article{1200787653,
author = {Kanenobu, Taizo and Marumoto, Yoshihiko},
title = {Unknotting and fusion numbers of ribbon 2-knots},
journal = {Osaka J. Math.},
volume = {34},
number = {1},
year = {1997},
pages = { 525-540},
language = {en},
url = {http://dml.mathdoc.fr/item/1200787653}
}
Kanenobu, Taizo; Marumoto, Yoshihiko. Unknotting and fusion numbers of ribbon 2-knots. Osaka J. Math., Tome 34 (1997) no. 1, pp. 525-540. http://gdmltest.u-ga.fr/item/1200787653/