TY - JOUR AU - Wu, Xi Guo and Lan TI - The gap theorems for some extremal submanifolds in a unit sphere JO - Communications in Mathematics PY - 2015 SP - 85 EP - 93 VL - 23 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/COMIM_2015__23_1_a5/ LA - en ID - COMIM_2015__23_1_a5 ER -