17O Knight shifts of the various types of CuO2 planes in Bi-cuprates high-Tc superconductorsL Le Noc, A Trokiner, J Schneck, AM Pougnet, R Mellet, J Primot and H SavaryJ. Chim. Phys., 89 (1992) 387-392DOI: https://doi.org/10.1051/jcp/1992890387