1. S. A. Badaev, "On positive numerations," Sib. Mat. Zh.,18, No. 3, 483–496 (1977).
2. S. S. Goncharov, "The problem of the number of nonautoequivalent constructivizations," Dokl. Akad. Nauk SSSR,25, No. 2, 271–274 (1980).
3. S. S. Goncharov, "Computable one-valued numerations," Algebra Logika,19, No. 5, 507–551 (1980).
4. S. S. Goncharov, "Nonautoequivalent constructivizations," Tr. IM SO AN SSSR, Novosibirsk,2, (1982).
5. Yu. L. Ershov, Theory of Numerations [in Russian], Nauka, Moscow (1977).