ANION SHIFT INFLUENCE ON BAND STRUCTURE OF CRYSTALS WITH CHALCOPYRITE LATTICE Ju. I. POLYGALOV, A. S. POPLAVNOI et A. M. RATNER J. Phys. Colloques, 36 C3 (1975) C3-129-C3-135 DOI: 10.1051/jphyscol:1975324