You will soon be able to electronically learn about the status of your submitted paper. For the moment, please address any question to (include your referal number):

Alejandra García Sotelo
Departamento de Física
CINVESTAV-IPN
Apdo. Postal 14-740
07000 México D.F.
Fax: (525) 747-3828
email: alex@fis.cinvestav.mx