1. V. M. Glushkov, Yu. V. Kapitonova, and A. A. Letichevskii, Automatic Computer Design [in Russian], Naukova Dumka, Kiev (1975).
2. S. A. Abramov and I. N. Antipov, Programming in Simplified ALGOL [in Russian], Nauka, Moscow (1978).
3. V. M. Savinkov and V. D. Tsal'p, ALGOL Programming, [in Russian], Vysshaya Shkola, Moscow (1975).
4. S. K. Abdali, ?A lambda-calculus model of programming languages,? J. Comput. Lang.,1, 303?320 (1976).
5. J. W. Backus, ?Can programming be liberated from the von Neumann style? A function style and its algebra programs,? Comm. ACM,21, No. 8, 613?642 (1978).