1. Blass, A., The model of Set Theory generated by countably many generic reals, preprint.
2. Comparison of the axioms of local and universal choice;Felgner;Fund. Math.,1971
3. Forcing with proper classes;Zarach;Fund. Math.,1973
4. Generic extension of admissible sets;Zarach,1976
5. Constructibility done more constructively;Zarach,1977