TY - JOUR AU - Penn, David AU - Plummer, E. C2 - Physical Review B (Condensed Matter and Materials Physics) DA - 1974-02-15 00:02:00 LA - en M1 - 9 PB - Physical Review B (Condensed Matter and Materials Physics) PY - 1974 TI - Field Emission as a Probe of the Surface Density of States ER -