PLASMON ELECTRON LOSS SPECTROSCOPY AND ELECTRICAL CONDUCTIVITY AT 300 K OF CRYSTALS AND QUASICRYSTALS IN AlMn AND AlMnSi J.-L. VERGER-GAUGRY et P. GUYOT J. Phys. Colloques, 47 C3 (1986) C3-477-C3-483 DOI: 10.1051/jphyscol:1986348