Title: Computability, Complexity, and Languages: Fundamentals of Theoretical Computer Science, Author: Martin Davis
Title: Formal Languages and Computation: Models and Their Applications, Author: Alexander Meduna
Title: Algorithms, Languages, Automata, and Compilers: A Practical Approach: A Practical Approach, Author: Maxim Mozgovoy
Title: Word Processing in Groups, Author: David B.A. Epstein