We discuss some consequences Fintushel-Stern `knot surgery' operation coming from its handlebody description. We give some generalizations of this operation and give a counterexample to their conjecture.
AKBULUT, SELMAN (2002) "Variations on Fintushel-Stern Knot Surgery on 4-manifolds," Turkish Journal of Mathematics: Vol. 26: No. 1, Article 6. Available at: https://journals.tubitak.gov.tr/math/vol26/iss1/6