[1] T. E. Cecil and P. J. Ryan: 
Focal sets and real hypersurfaces in complex projective space. Trans. Amer. Math. Soc. 269 (1982), 481–498. 
MR 0637703[2] U.H. Ki, S.J. Kim and S.B. Lee: 
Some characterizations of a real hypersurface of type A. Kyungpook Math. J. 31 (1991), 73–82. 
MR 1121185[4] M. Kimura: 
Some real hypersurfaces in a complex projective space. Saitama Math. J. 5 (1987), 1–5. 
MR 0920524[5] M. Kimura: 
Correction to “Some real hypersurfaces in a complex projective space”. Saitama Math. J. 10 (1992), 33–34. 
MR 1212296[12] R. Takagi: 
On homogeneous real hypersurfaces in a complex projective space. Osaka J. Math. 10 (1973), 495–506. 
MR 0336660 | 
Zbl 0274.53062[13] R. Takagi: 
Real hypersurfaces in a complex projective space with constant principal curvatures I, II. J. Math. Soc. Japan 27 (1975), 43–53, 507–516. 
DOI 10.2969/jmsj/02710043 | 
MR 0400120