High resolution electron microscopy study of the high Tc superconductor Tl0.5Pb0.5Sr4Cu2CO3O7 Maryvonne Hervieu, Claude Michel, Marielle Huve, Christine Martin, Antoine Maignan and Bernard RaveauMicrosc. Microanal. Microstruct., 4 1 (1993) 41-50DOI: https://doi.org/10.1051/mmm:019930040104100