A conjecture of [swTAMS] states that a knot is nonfibered if and only if its infinite cyclic cover has uncountably many finite covers. We prove the conjecture for a class of knots that includes all knots of genus 1, using techniques from symbolic dynamics.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-bc85-0-7, author = {Daniel S. Silver and Susan G. Williams}, title = {Nonfibered knots and representation shifts}, journal = {Banach Center Publications}, volume = {86}, year = {2009}, pages = {101-107}, zbl = {1187.57010}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-bc85-0-7} }
Daniel S. Silver; Susan G. Williams. Nonfibered knots and representation shifts. Banach Center Publications, Tome 86 (2009) pp. 101-107. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-bc85-0-7/