TY - JOUR AU - D Chen AU - Ronald Goldfarb AU - R Cross AU - A Sanchez C2 - Physical Review B (Condensed Matter and Materials Physics) DA - 1993-09-01 00:09:00 LA - en M1 - 48 PB - Physical Review B (Condensed Matter and Materials Physics) PY - 1993 TI - Surface Barrier and Lower Critical Field in YBa2Cu3O7-δ Superconductors ER -