@article{DIA_2003__49-50__3_0,
     author = {Lair, C.},
     title = {\'El\'ements de th\'eorie des esquisses. {Section} 3 : esquisses},
     journal = {Diagrammes},
     pages = {3--58},
     publisher = {Universit\'e Paris 7, Unit\'e d'enseignement et de recherche de math\'ematiques},
     volume = {49-50},
     year = {2003},
     mrnumber = {2104014},
     language = {fr},
     url = {http://archive.numdam.org/item/DIA_2003__49-50__3_0/}
}