Контексно слободна граматика: Разлика помеѓу преработките

Michael Sipser (1997). Introduction to the Theory of Computation. PWS Publishing. ISBN 0-534-94728-X. Section 2.1: Context-Free Grammars, pp.91–101. Section 4.1.2: Decidable problems concerning context-free languages, pp.156–159. Section 5.1.1: Reductions via computation histories: pp.176–183.

^ L, BalaSundaraRaman; Ishwar.S, Sanjeeth Kumar Ravindranath (2003-08-22). "Context Free Grammar for Natural Language Constructs - An implementation for Venpa Class of Tamil Poetry". Proceedings of Tamil Internet, Chennai, 2003, 128-136, International Forum for Information Technology in Internet. Retrieved on 2006-08-24.