Degrees of nonrecursive presentability. (English)
Proc. Am. Math. Soc. 38, 621-624 (1973).
1
The strong homogeneity conjecture. (English)
J. Symb. Log. 35(1970), 375-377 (1971).
2
Hierarchies of Boolean algebras. (English)
J. Symb. Log. 35 (1970), 365-374 (1971).
3
The strong homogeneity conjecture (English)
J. Symb. Log. 35, No. 3, 375-377 (1970).
4
Hiearchies of Boolean algebras (English)
J. Symb. Log. 35, No. 3, 365-374 (1970).
5
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