Descriptional Complexity of Formal SystemsJeffrey Shallit, Alexander Okhotin · First published 2014Open the Tome
Neverending FractionsJonathan M. Borwein, Alf van der Poorten, Jeffrey Shallit, Wadim Zudilin · First published 2014Open the Tome
Second Course in Formal Languages and Automata TheoryJeffrey Outlaw Shallit · First published 2008 · Latest edition 2009Open the Tome