Christensen, C. et al "IAM, A System for Interactive Algebraic Manipulation" (1971) 
[SYMSAM 71] (1971) [ACM] Proceedings of the Second Symposium on Symbolic and Algebraic Manipulation, March 2325, 1971 Los Angeles (SYMSAM 71)
Languages mentioned
 IAM {1968} Interactive Algebraic Manipulation


