@article{GDZPPN002321033,
title = {Ribbon Concordance of Knots in the 3-Sphere.},
journal = {Mathematische Annalen},
volume = {255},
year = {1981},
pages = {157-170},
zbl = {0451.57001},
url = {http://dml.mathdoc.fr/item/GDZPPN002321033}
}
Gordon, C.McA. Ribbon Concordance of Knots in the 3-Sphere.. Mathematische Annalen, Tome 255 (1981) pp. 157-170. http://gdmltest.u-ga.fr/item/GDZPPN002321033/