See at:
ISTI Repository | CNR ExploRA | www.nosaitaca.it
See at:
www.eccomas.org | CNR ExploRA
See at:
arXiv.org e-Print Archive | SIAM Journal on Matrix Analysis and Applications
| ISTI Repository
| SIAM Journal on Matrix Analysis and Applications
| doi.org
| epubs.siam.org
| CNR ExploRA
See at:
cmmse.usal.es | CNR ExploRA