PHOTOELECTRIC PROPERTIES OF GD a-Si : H MONOLAYER FILMS FOR ELECTROPHOTOGRAPHIC APPLICATIONS N. Yamamoto, K. Wakita, Y. Nakayama et T. Kawamura J. Phys. Colloques, 42 C4 (1981) C4-495-C4-498 DOI: 10.1051/jphyscol:19814105