Context-Sensitive Immediate Constituent Analysis-Context-Free Languages Revisited - P. Stanley Peters Jr.; Robert W. Ritchie (STOC, 1969)

On Restricting the Base Component of Transformational Grammars - P. Stanley Peters Jr.; Robert W. Ritchie (Inf. Control., 1971)

On the generative power of transformational grammars. - P. Stanley Peters Jr.; Robert W. Ritchie (Inf. Sci., 1973)