R2: a natural language question-answering system. - Kenneth Biss; Robert T. Chien; Fred A. Stahl (AFIPS Spring Joint Computing Conference, 1971)

A data structure for cognitive information retrieval. - Kenneth Biss; Robert T. Chien; Fred A. Stahl (Int. J. Parallel Program., 1972)

A Model for Understanding the Driver's World - Kenneth Biss (1973)

Semantic Modeling for Deductive Question-Answering. - Kenneth Biss; Robert T. Chien; Fred A. Stahl; Steven J. Weissman (IEEE Trans. Computers, 1976)