@article{DIA_1980__S3__R1_0,
     author = {Coppey, Laurent},
     title = {Th\`ese de doctorat d'\'etat es sciences math\'ematiques pr\'esent\'ee \`a l'universit\'e de {Picardie}},
     journal = {Diagrammes},
     pages = {i-iv,1-139},
     publisher = {Universit\'e Paris 7, Unit\'e d'enseignement et de recherche de math\'ematiques},
     volume = {S3},
     year = {1980},
     language = {fr},
     url = {http://archive.numdam.org/item/DIA_1980__S3__R1_0/}
}