%0 Journal Article %A Wu, Xi Guo and Lan %T The gap theorems for some extremal submanifolds in a unit sphere %J Communications in Mathematics %D 2015 %P 85-93 %V 23 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/COMIM_2015__23_1_a5/ %G en %F COMIM_2015__23_1_a5