STUDY OF LIGHT INDUCED CHANGES IN a-Si:H BY DETAILED COMPUTER MODELING OF ADMITTANCE AND DLTS J.D. Cohen, D.V. Lang, J.P. Harbison and A.M. Sergent J. Phys. Colloques, 42 C4 (1981) C4-371-C4-374 DOI: 10.1051/jphyscol:1981479