Deforming twist-spun knots
In  Zeeman introduced the process of twist-spinning an n-knot to obtain an (n + l)-knot, and proved die remarkable theorem that a twist-spun knot is fibred. In  Fox described another deformation which can be applied during the spinning process, and which he called rolling. We show that, provided one combines the rolling with a twist, the resulting knot is again fibred. In fact, this result holds for a larger class of deformations, defined below. © 1979 American Mathematical Society.
Publication Source (Journal or Book title)
Transactions of the American Mathematical Society
Litherland, R. (1979). Deforming twist-spun knots. Transactions of the American Mathematical Society, 250, 311-331. https://doi.org/10.1090/S0002-9947-1979-0530058-4