1. Infinitely many ribbon knots with the same fundamental group;Mathematical Proceedings of the Cambridge Philosophical Society;1985-11
2. Spaces dominated by two-complexes;Proceedings of the American Mathematical Society;1981
3. A survey of multidimensional knots;Lecture Notes in Mathematics;1978
4. The fundamental ideal and ₂ of higher dimensional knots;Proceedings of the American Mathematical Society;1973
5. An exact sequence calculation for the second homotopy of a knot;Proceedings of the American Mathematical Society;1972