@article{NSJOM_1994_24_1a_18,
     author = {Haizhong Li},
     title = {Curvature {Pinching} for 

 minimal submanifolds in a sphere},
     journal = {Novi Sad Journal of Mathematics},
     pages = {223-230},
     publisher = {mathdoc},
     volume = {24},
     number = {1},
     year = {1994},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1994_24_1a_18/}
}