@article{00874391,
title = {On a result of Williamson.},
journal = {Portugaliae Mathematica. Nova S\'erie},
volume = {53},
year = {1996},
pages = {35-41},
zbl = {0845.15013},
language = {en},
url = {http://dml.mathdoc.fr/item/00874391}
}
Gong, Ming-Peng. On a result of Williamson.. Portugaliae Mathematica. Nova Série, Tome 53 (1996) pp. 35-41. http://gdmltest.u-ga.fr/item/00874391/