TY - JOUR AU - Shigeo Tanuma AU - Cedric Powell AU - David Penn C2 - Journal of Electron Spectroscopy and Related Phenomena DA - 1993-01-01 00:01:00 LA - en M1 - 62 PB - Journal of Electron Spectroscopy and Related Phenomena PY - 1993 TI - Use of Sum Rules on the Energy-Loss Function for the Evaluation of Experimental Optical Data ER -