DDL translator

J. R. Duley and D. L. Dietmeyer, “A digital system design language (DDL),” IEEE Trans. Comput., C-17, No. 9 (1968). J. R. Duley and D. L. Dietmeyer, “Translation of a DDL digital system specification to Boolean equations,” IEEE Trans. Comput., C-18, No. 4 (1969). O. F. Bobkova, I. N. Kuznetsova, L. F. Lebedev, L. I. Lunena, E. I. Makarova, and G. P. Khvostunova, “Realization of REFAL interpreter on M-220 computers,” in: Programming Languages and Realization Methods [in Russian], Inst. Kibernetiki Akad. Nauk UkrSSR, Kiev (1973).