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1by Gallana Álvarez,S., Salazar Fernandez,C.I., Avellá Vecino,F.J., Torres Gómez,J., Pérez Sanchez,J.M.
Published 2005Digital revistaSCIELO -
2by Avellá Vecino,F.J., Salazar Fernández,C.I., Gallana Álvarez,S., Rollón Mayordomo,A., Mayorga Jiménez,F., Pérez Sánchez,J.M.
Published 2004Digital revistaSCIELO