1. Pure and Applied Mathematics, No. 22;Chen, Bang-yen,1973
2. Minimal submanifolds of a sphere with second fundamental form of constant length;Chern, S. S.,1970
3. Some totally real minimal surfaces in 𝐶𝑃²;Houh, Chorng-shi;Proc. Amer. Math. Soc.,1973
4. On invariant immersions;Ogiue, Koichi;Ann. Mat. Pura Appl. (4),1968
5. S. T. Yau, Submanifolds with constant mean curvature. I (to appear).