TY - RPRT TI - First-principles calculation of the superconducting gap function due to electron-electron interaction for YBa2Cu AU - ST Chui AU - RV Kasowski AU - WY Hsu PY - 1989 DO - 10.1103/physrevb.39.2217 UR - https://pubmed.ncbi.nlm.nih.gov/9948456/ ID - 9948456 ER -