@article{CM_1975__30_1_1_0,
     author = {Bourguignon, Jean-Pierre},
     title = {Une stratification de l'espace des structures riemanniennes},
     journal = {Compositio Mathematica},
     pages = {1--41},
     publisher = {Noordhoff International Publishing},
     volume = {30},
     number = {1},
     year = {1975},
     mrnumber = {418147},
     zbl = {0301.58015},
     language = {fr},
     url = {http://www.numdam.org/item/CM_1975__30_1_1_0/}
}