@article{10_4153_CJM_1993_031_1,
     author = {Lovri\'c, Miroslav},
     title = {Curvature {Pinching} {Based} on {Integral} {Norms} of the {Curvature}},
     journal = {Canadian journal of mathematics},
     pages = {599--611},
     year = {1993},
     volume = {45},
     number = {3},
     doi = {10.4153/CJM-1993-031-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1993-031-1/}
}