@article{00969303,
title = {Almost-orthonormal vector systems.},
journal = {Beitr\"age zur Algebra und Geometrie},
volume = {37},
year = {1996},
pages = {367-381},
zbl = {0874.15001},
language = {en},
url = {http://dml.mathdoc.fr/item/00969303}
}
Haase, Dietrich; Stachel, Hellmuth. Almost-orthonormal vector systems.. Beiträge zur Algebra und Geometrie, Tome 37 (1996) pp. 367-381. http://gdmltest.u-ga.fr/item/00969303/