1. Natural language input for a computer problem-solving system;Bobrow,1968
2. Pedagogical, natural language and knowledge engineering techniques in SOPHIE I, II and III;Brown,1982
3. MECHO: year one;Bundy,1976
4. MECHO: a program to solve mechanics problems;Bundy,1979
5. CARPS, a program which solves calculus word problems;Charniak,1968