TY - JOUR AU - Penn, David C2 - Physical Review B (Condensed Matter and Materials Physics) DA - 1976-06-15 00:06:00 LA - en M1 - 13 PB - Physical Review B (Condensed Matter and Materials Physics) PY - 1976 TI - Electron mean free paths for free-electron-like materials UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=620125 ER -