1. The functional level of archiphoneme;Akamatsu,1972
2. System and structure in the Abaza verbal complex;Allen;T.P.S.,1950
3. Slips of the tougue;Boomer;Brit. J. of Disorders of Communication,1968
4. Current issues in linguistic theory;Chomsky,1964
5. Aspects of the theory of syntax;Chomsky,1965