B. Y. Chen's inequality for semi-slant submanifolds in T -space forms. Aktan, Nesip, Sarıkaya, M.Zeki, Özüsağlam, Erdal (2008) Balkan Journal of Geometry and its Applications (BJGA)
Biharmonic anti-invariant submanifolds in Sasakian space forms. Arslan, Kadri, Ezentas, Ridvan, Murathan, Cengizhan, Sasahara, Toru (2007) Beiträge zur Algebra und Geometrie
Biminimal Legendrian surfaces in 5-dimensional Sasakian space forms Toru Sasahara (2007) Colloquium Mathematicae We classify nonminimal biminimal Legendrian surfaces in 5-dimensional Sasakian space forms.