Charniak, Eugene "Computer Solution of Calculus Word Problems"

[IJCAI-69] (1969) Donald E. Walker, Lewis M. Norton (Eds.): Proceedings of the 1st International Joint Conference on Artificial Intelligence IJCAI-69, Washington, DC, May 1969. William Kaufmann, 1969  

Languages mentioned CARPS {1968} Word-problems language SIN {1967} Symbolic maths package STUDENT {1964}