RELATIVISTIC BAND STRUCTURE OF GeTe, SnTe, PbTe, PbSe, AND PbS Frank HERMAN, Richard L. KORTUM, Irene B. ORTENBURGER et John P. VAN DYKE J. Phys. Colloques, 29 C4 (1968) C4-62-C4-77 DOI: 10.1051/jphyscol:1968410