@article{01249606,
title = {The possible numbers of zeros in an orthogonal matrix.},
journal = {ELA. The Electronic Journal of Linear Algebra [electronic only]},
volume = {6},
year = {1999},
pages = {19-23},
zbl = {0918.15007},
language = {en},
url = {http://dml.mathdoc.fr/item/01249606}
}
Cheon, G.-S.; Johnson, C.R.; Lee, S.-G.; Pribble, E.J. The possible numbers of zeros in an orthogonal matrix.. ELA. The Electronic Journal of Linear Algebra [electronic only], Tome 6 (1999) pp. 19-23. http://gdmltest.u-ga.fr/item/01249606/