TY - JOUR AU - Hyunjin Lee AU - Seonhui Kim TI - Hopf Hypersurfaces with $\eta$-Parallel Shape Operator in Complex Two-Plane Grassmannians JO - Bulletin of the Malaysian Mathematical Society PY - 2013 VL - 36 IS - 4 UR - http://geodesic.mathdoc.fr/item/BMMS_2013_36_4_a8/ ID - BMMS_2013_36_4_a8 ER -