Found here:<p><a href="https://en.wikipedia.org/wiki/Automata_theory" rel="nofollow">https://en.wikipedia.org/wiki/Automata_theory</a><p>Related:<p><a href="https://en.wikipedia.org/wiki/Chomsky_hierarchy" rel="nofollow">https://en.wikipedia.org/wiki/Chomsky_hierarchy</a><p><a href="https://en.wikipedia.org/wiki/Formal_grammar" rel="nofollow">https://en.wikipedia.org/wiki/Formal_grammar</a><p><a href="https://en.wikipedia.org/wiki/Context-free_grammar" rel="nofollow">https://en.wikipedia.org/wiki/Context-free_grammar</a><p><a href="https://en.wikipedia.org/wiki/Parsing" rel="nofollow">https://en.wikipedia.org/wiki/Parsing</a>