Journal: Math. Log. Q.

Volume 26, Issue 32-33

497 -- 501Robert E. Kirk. A Characterization of the Classes of Finite Tree Frames Which are Adequate for the Intuitionistic Logic
503 -- 507Jerrold M. Gold. Some Results on the Structure of the ϕ-Spectrum
509 -- 516Rod McBeth. A Generalization of Ackermann's Function
517 -- 522Klaus Gloede. On a Collection of Classes in Ackermann's Set Theory With the Axiomschema of Foundation
523 -- 528Josef Falkinger. Universalität von Berechenbaren Numerierungen von Partiell Rekursiven Funktionen