TY - JOUR AU - Apell, S AU - Penn, David C2 - Physical Review B (Condensed Matter and Materials Physics) DA - 1986-01-01 00:01:00 LA - en M1 - 34 PB - Physical Review B (Condensed Matter and Materials Physics) PY - 1986 TI - A General Expression for the Coulomb Interaction in the Presence of a Surface ER -