INTERFACE JUNCTIONS AND SIMMETRY E. G. DONI, PH. KOMNINOU, G. L. BLERIS, TH. KARAKOSTAS et P. DELAVIGNETTEJ. Phys. Colloques, 51 C1 (1990) C1-121-C1-125DOI: https://doi.org/10.1051/jphyscol:1990117