-
V. ALTUZAR
Department of Physics, CINVESTAV-I.P.N. CICATA-I.P.N.
-
M. PACHECO
CICATA-I.P.N.
-
S. A. TOMÁS
Department of Physics, CINVESTAV-I.P.N.
-
J. L. ARRIAGA
IMP
-
O. ZELAYA-ANGEL
Department of Physics, CINVESTAV-I.P.N.
-
F. SÁNCHEZ-SINENCIO
Department of Physics, CINVESTAV-I.P.N. CICATA-I.P.N.