1. Inductive definitions and their closure ordinals;Aanderaa,1973
2. Inductive definitions and analogues of large cardinals;Aczel,1972
3. Inductive definitions and reflecting properties of admissible ordinals;Aczel,1973
4. Infinitary languages and admissible sets;Barwise;J. Symbolic Logic,1969
5. Absolute logics and Lmm;Barwise;Ann. Math. Logic,1972