Temperature dependence of the anisotropic electrodynamics in the ladder compounds Sr14-xCaxCu24O41 B. Ruzicka, L. Degiorgi, U. Ammerahl, G. Dhalenne and A. Revcolevschi Eur. Phys. J. B, 6 3 (1998) 301-305 Published online: 15 December 1998 DOI: 10.1007/s100510050552