1. SGA 4;Artin,1972
2. Etale Homotopy;Artin,1969
3. Homotopy Limits, Completions, and Localizations;Bousfield,1972
4. Generalized Adams completion;Deleanu;Cahiers Topologie et Géom. Différentielle,1974
5. Idempotent triples and completion;Deleanu;Math. Z.,1975