[4] H. Hashimoto:
Some 6-dimensional oriented submanifolds in the octonians. Toyama. Math. Rep., 11 (1988), pp. 1-19.
MR 0974250 |
Zbl 0664.53007
[8] K. Yano:
The theory of Lie Derivatives and its Applications. North-Holland, Amsterdam, 1957.
MR 0088769 |
Zbl 0077.15802