43Ca NMR investigation in bi-based high-Tc cuprates A Trokiner, L Le Noc, A Yakubovskii, KN Mykhalyov and SV Verkhovskii J. Chim. Phys., 91 (1994) 862-868 Published online: 29 May 2017 DOI: 10.1051/jcp/1994910862