1. Universality of Tag systems with P = 2;Cocke;J. Assoc. Comput. Mach.,1964
2. Generating Productions from BNF;Earley,1964
3. Generation of parsing algorithms for Chomsky type 2 languages;Eickel;Tech. Hoch. München, Ber. #6401,1964
4. Syntactic analysis and operator precedence;Floyd;J. Assoc. Comput. Mach.,1963
5. Bounded context syntactic analysis;Floyd;Commun. Assoc. Comput. Mach.,1964