@article{Fonseca:2009,
author
=
"M.Fonseca and J.Mexia and R.Zmyślony",
title
=
"Jordan algebras, generating pivot variables and orthogonal normal models",
journal
=
"Journal of Interdisciplinary Mathematics",
volume
=
"Vol. 10",
number
=
"no 2",
pages
=
"305--326",
year
=
"2007",
}