@article{GDZPPN002113627,
title = {Compact 8-manifolds with holonomy Spin (7).},
journal = {Inventiones mathematicae},
volume = {123},
year = {1996},
pages = {507-552},
zbl = {0858.53037},
url = {http://dml.mathdoc.fr/item/GDZPPN002113627}
}
Joyce, D.D. Compact 8-manifolds with holonomy Spin (7).. Inventiones mathematicae, Tome 123 (1996) pp. 507-552. http://gdmltest.u-ga.fr/item/GDZPPN002113627/