Levelt, Willem J. M. Language Production Group Levelt, MPI for Psycholinguistics, Max Planck Society;
Levelt_Formal_Grammars_vol3_1974.pdf (Publisher version), 6MB
Levelt, W. J. M. (1974). Formal grammars in linguistics and psycholinguistics: Vol.III, Psycholinguistic applications. The Hague: Mouton.