https://research.ibm.com/publications/electronic-structure-of-the-high-tc-superconductor-sr02la18cuo4
Electronic structure of the high-Tc superconductor Sr0.2La1.8CuO4 for Physical Review B - IBM...
Electronic structure of the high-Tc superconductor Sr0.2La1.8CuO4 for Physical Review B by J.G. Bednorz et al.