American Mathematical Monthly
Johnson and Madden look at collections of bi-infinite strings of symbols that occur in several different areas of mathematics and ask whether these collections are the same in some sense. A dynamical systems property called entropy can be used to show that the shifts of finite type are not all conjugate to uniquely decipherable renewal systems.
Aimee S. A. Johnson and K. M. Madden.
"Renewal Systems, Sharp-Eyed Snakes, And Shifts Of Finite Type".
American Mathematical Monthly.