@incollection{SB_1971-1972__14__201_0,
     author = {Kuiper, Nicolaas H.},
     title = {Sur les vari\'et\'es riemanniennes tr\`es pinc\'ees},
     booktitle = {S\'eminaire Bourbaki : vol. 1971/72, expos\'es 400-417},
     series = {S\'eminaire Bourbaki},
     note = {talk:410},
     pages = {201--218},
     year = {1973},
     publisher = {Springer-Verlag},
     address = {Berlin/Heidelberg},
     number = {14},
     mrnumber = {417979},
     zbl = {0257.53043},
     language = {fr},
     url = {https://www.numdam.org/item/SB_1971-1972__14__201_0/}
}