Current address:

Department of Industries

Faculty of Exact and Natural Sciences

Universidad de Buenos Aires

Ciudad Universitaria

1428 - Capital Federal

Argentina

Phone: + 54-11-45763397

Fax:

+ 54-11-45763366

+ 54-23-20491822

e-mail:

alzamora@indust.di.fcen.uba.ar

alzamora@di.fcen.uba.ar

alzamora@ciudad.com.ar