1. An enumeration of knots and links, and some of their algebraic properties. In Computational Problems in Abstract Algebra, Pergamon, New York (1969), pp. 329–358.
2. The conway polynomial
3. Polynomial Invariants of Knots of Codimension Two
4. An elementary proof of Rochlin's signature theorem and its extension by Guillou and Marin. Unpublished.