1. Saturated intuitionistic theories;Aczel,1968
2. A note on interpreting intuitionistic higher-order logic. Handwritten note;Aczel,1980
3. Proof-functional connectives and realizability;Barbanera;Archive for Mathematical Logic,1994
4. Combinatory logic and the axiom of choice;Barendregt;Indagationes Mathematicae,1973
5. The nonderivability in intuitionistic formal systems of theorems on the continuity of effective operations;Beeson;JSL,1975