George W. A. Milne, Stephen R. Heller, A. Fein, E. F. Frees, R. G. Marquart, J. A. McGill, J. A. Miller, D. S. Spiers. The NIH-EPA Structure and Nomenclature Search System. Journal of Chemical Information and Computer Sciences, 18(4):181-186, 1978. [doi]
Abstract is missing.