[1] S. FEFERMAN:
Arithmetization of metamathematice in a general setting. Fundamenta Math. XLIX (1960-1961), 35-91.
MR 0147397
[2] H. HERMES:
Einführung in die Verbandstheorie. Springer Verlag Berlin - Heidelberg - New York 1967.
MR 0220634 |
Zbl 0153.33203
[3] S. C. KLEENE: Introduction to metamathematice. Amsterdam 1952.
[4] A. LÉVY:
A hierarchy of formulas in set theory. Memoirs of the American Mathematical Society 57 (1965).
MR 0189983
[5] A. MOSTOWSKI:
A generalization of the incompleteness theorems. Fundament. Math. XLIX (1960-1961), 205-323.
MR 0130174
[6] M. HÁJKOVÁ:
The lattice of bi-numerations of arithmetic. II. To appear in this journal.
MR 0290970