PHOTO AND ELECTROCHEMICAL DOPING IN Ge-BASED CHALCOGENIDES S. Rajagopalan, K. Solomon Harshavardhan, Bhanwar Singh et K. L. ChopraJ. Phys. Colloques, 42 C4 (1981) C4-911-C4-914DOI: https://doi.org/10.1051/jphyscol:19814198