[1] UNIV COMPLUTENSE MADRID,FAC CC QUIM,DEPT QUIM FIS 1,E-28040 MADRID,SPAIN
[2] UNIV POLITECN MADRID,ESCUELA TECH SUPER IND AERONAUT,DEPT MAT & PROD AEROESP,E-28040 MADRID,SPAIN
[3] UNIV NACL EDUC DISTANC,FAC CIENCIAS,DEPT QUIM FIS,E-28040 MADRID,SPAIN