@article{1200692534,
author = {Yanagawa, Takaaki},
title = {On ribbon 2-knots. The 3-manifold bounded by the 2-knots},
journal = {Osaka J. Math.},
volume = {6},
number = {1},
year = {1969},
pages = { 447-464},
language = {en},
url = {http://dml.mathdoc.fr/item/1200692534}
}
Yanagawa, Takaaki. On ribbon 2-knots. The 3-manifold bounded by the 2-knots. Osaka J. Math., Tome 6 (1969) no. 1, pp. 447-464. http://gdmltest.u-ga.fr/item/1200692534/