RAMÍREZ-FALICOV MODEL CERIO ALFA CERIUM-ALPHA RARE EARTHS TIERRAS RARAS BAJA TEMPERATURA CALOR ESPECIFICO CERIO CERIUM COMPORTAMIENTO MAGNETICO Comments on electronic phase transition inb Ce1XLax alloys ELASTIC PROPERTIES Efecto de los procesos normales en la conductividad térmica de muestras finitas de aislantes Effect af rare earth impurities on the α - γ transition in metallic Ce Effect of Th impurities on the α - γ transition in metallic Ce Electronic phase transition in Ce1-X Lax alloys FLUCTUATIONS HAMILTONIANS HIBRIDIZACION HYBRIDIZATION IMPUREZAS IMPURITIES INTERVALO DE TEMPERATURA 0065-0273 K Intermediate-valence Tm: An exactly solvable impurity model KONDO EFFECT LANTANO LANTHANUM LOW TEMPERATURE Localised description of valence fluctuations Localized and virtual magnetoelastic states in a linear ehain