TY - JOUR AU - Penn, David AU - Clark, Charles AU - Powell, Cedric AU - Fulop, T AU - Tanuma, Shigeo 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 -