1. Théorie des topos et cohomologie étale des schémas. Tome 1: Théorie des topos;Artin,1972
2. Cohomology of stacks;Behrend,2004
3. Quantization of foliations;Block,1992
4. An application of descent to a classification theorem for toposes;Bunge;Math. Proc. Cambridge Philos. Soc.,1990