Koller, H. R., Marden, E., and Pfeffer, H., "The HAYSTAQ System: Past, Present, and Future" p1:143ff 1959.

Proceedings of the International Conference on Sci (1959) Proceedings of the International Conference on Scientific Information, Washington, D. C.; November 16-21, 1958: National Academy of Sciences—National Research Council, Washington, D.C. 1959  

Languages mentioned HAYSTAQ {1959} Restricted input querying language