1. Moebius geometry of submanifolds in 𝑆ⁿ;Wang, Changping;Manuscripta Math.,1998
2. Surfaces with vanishing Moebius form in 𝑆ⁿ;Li, Hai Zhong;Acta Math. Sin. (Engl. Ser.),2003
3. Minimal surfaces of constant curvature in 𝑆ⁿ;Bryant, Robert L.;Trans. Amer. Math. Soc.,1985
4. Deng, Y.J., Wang, C.P., Willmore surfaces in Lorentzian space, Sci. China Ser. A 35 (2005), 1361–1372.
5. Conformal CMC-surfaces in Lorentzian space forms;Nie, Changxiong;Chin. Ann. Math. Ser. B,2007