@article{DIA_1986__15__A4_0,
     author = {Lair, C.},
     title = {\`A propos de {\guillemotleft} {Toposes,} triples and theories {\guillemotright} de messieurs {M.} {Barr} et {C.} {Wells}},
     journal = {Diagrammes},
     note = {talk:4},
     pages = {L1--L20},
     publisher = {Universit\'e Paris 7, Unit\'e d'enseignement et de recherche de math\'ematiques},
     volume = {15},
     year = {1986},
     mrnumber = {866937},
     zbl = {0598.18002},
     language = {fr},
     url = {http://www.numdam.org/item/DIA_1986__15__A4_0/}
}