TY - JOUR AU - Cedric Powell AU - R Stein AU - J Needham AU - T Driscoll C2 - Physical Review B (Condensed Matter and Materials Physics) DA - 1977-08-15 00:08:00 LA - en M1 - 16 PB - Physical Review B (Condensed Matter and Materials Physics) PY - 1977 TI - Attenuation lengths of low-energy electrons in solids derived from the yield of proton-excited Auger electrons: beryllium and aluminum ER -