@article{05178425,
title = {Normal anti-invariant submanifolds of paraquaternionic K\"ahler manifolds.},
journal = {Surveys in Mathematics and its Applications},
volume = {1},
year = {2006},
pages = {99-109},
zbl = {1139.53015},
language = {en},
url = {http://dml.mathdoc.fr/item/05178425}
}
Chiriac, Novac-Claudiu. Normal anti-invariant submanifolds of paraquaternionic Kähler manifolds.. Surveys in Mathematics and its Applications, Tome 1 (2006) pp. 99-109. http://gdmltest.u-ga.fr/item/05178425/