TY - JOUR AU - M Smith AU - K Taylor AU - Charles Clark C2 - Journal of Physics B-Atomic Molecular and Optical Physics DA - 1992-01-01 00:01:00 LA - en M1 - 25 PB - Journal of Physics B-Atomic Molecular and Optical Physics PY - 1992 TI - R-matrix Theory of Two-photon Absorption: Application to Beryllium and Carbon, ER -