Curvature operators : pinching estimates and geometric examples
Annales scientifiques de l'École Normale Supérieure, Serie 4, Volume 11 (1978) no. 1, p. 71-92
@article{ASENS_1978_4_11_1_71_0,
     author = {Bourguignon, Jean-Pierre and Karcher, Hermann},
     title = {Curvature operators : pinching estimates and geometric examples},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     publisher = {Elsevier},
     volume = {Ser. 4, 11},
     number = {1},
     year = {1978},
     pages = {71-92},
     doi = {10.24033/asens.1340},
     zbl = {0386.53031},
     mrnumber = {58 \#12829},
     language = {en},
     url = {http://www.numdam.org/item/ASENS_1978_4_11_1_71_0}
}
Bourguignon, Jean-Pierre; Karcher, Hermann. Curvature operators : pinching estimates and geometric examples. Annales scientifiques de l'École Normale Supérieure, Serie 4, Volume 11 (1978) no. 1, pp. 71-92. doi : 10.24033/asens.1340. http://www.numdam.org/item/ASENS_1978_4_11_1_71_0/

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