1. N. I. Glebov, ?Synthesis of operators,? collection: Problems of Cybernetics [in Russian], 8, Fizmatgiz, Moscow, 1962.
2. N. I. Glebov, ?On the algebraic equivalence of subsets of categories,? collection: Problems of Cybernetics [in Russian], 8, Fizmatgiz, Moscow, 1962.
3. N. I. Glebov, ?The construction of a class of R-criteria of equivalence,? collection: Problems of Cybernetics [in Russian], 9, Fizmatgiz, Moscow 1963.
4. V. M. Glushkov, ?Theory of automata and the formal transformation of programs,? Kibernetika [Cybernetics], no. 5, Kiev, 1965.
5. A. P. Ershov, ?Operational algorithms. I,? collection: Problems of Cybernetics [in Russian], 3, Fizmatgiz, Moscow, 1960.