1. On certain fibred ribbon disc pairs;Aitchison, Iain R.;Trans. Amer. Math. Soc.,1988
2. De Gruyter Studies in Mathematics;Burde, Gerhard,1985
3. On equivariant slice knots;Cha, Jae Choon;Proc. Amer. Math. Soc.,1999
4. J. C. Cha, A characterization of the Murasugi polynomial of an equivariant slice knot, (2004) preprint.
5. An enumeration of knots and links, and some of their algebraic properties;Conway, J. H.,1970