TY - JOUR AU - John Moreland AU - Alan Clark AU - H Ku AU - Daniel Shelton C2 - Cryogenics DA - 1987-05-01 00:05:00 LA - en M1 - 27 PB - Cryogenics PY - 1987 TI - Electron Tunneling Measurement of the Energy Gap in a La-Sr-Cu-O Superconductor ER -