STUDIES ON APERIODIC CRYSTALS IN Al-Mn AND Al-V ALLOYS BY MEANS OF TRANSMISSION ELECTRON MICROSCOPY K. URBAN, J. MAYER, M. RAPP, M. WILKENS, A. CSANADY and J. FIDLER J. Phys. Colloques, 47 C3 (1986) C3-465-C3-474 DOI: 10.1051/jphyscol:1986347