Temperature dependence of infrared conductivity of manganites Pr0.7Ca0.3-xSrxMnO3 (x = 0, 0.05 and 0.2) N. Petit, C. Daulan, J.-C. Soret, A. Maignan and F. Gervais Eur. Phys. J. B, 14 4 (2000) 617-625 Published online: 15 April 2000 DOI: 10.1007/s100510051070