THE ANISOTROPY OF THE PbTe FILMS OBLIQUELY DEPOSITED IN VACUUM STUDIED BY ELLIPSOMETRY AND PHOTOVOLTAIC EFFECT E. Zamfir et C. Oancea J. Phys. Colloques, 44 C10 (1983) C10-49-C10-52 DOI: 10.1051/jphyscol:19831009