TY - JOUR AU - David Penn AU - Charles Clark AU - Cedric Powell AU - T Fulop AU - Shigeo Tanuma C2 - Ultramicroscopy DA - 1997-01-01 LA - en M1 - 69 PB - Ultramicroscopy PY - 1997 TI - Theory of the Cross Sections for Inelastic Scattering of Electrons by Core Level Excitations in Solids ER -