참고문헌
- J. Diff. Geom v.17 Submanifolds and special structures on the octonians R. L. Bryant
- Submanifolds and isometric immersions M. Dajczer
- Kodai Math. J. v.16 Characteristic classes of oriented 6-dimensional submanifolds in the octonians H. Hashimoto
- J. Korean Math, Soc. v.28 Oriented 5-dimensional submanifolds in the purely imaginary octonians H. Hashimoto