@article{article5525aa73,
title   = {Direct observation of the structural defects in oxide superconductors of high tc single crystal},
author = {Gallo, Nelson Jose Heraldo and Martin, A A and Andreeta, José Pedro and Botura, V A and Hernandes, Antônio Carlos},
year = {1989},
doi = {10.1007/bf00721486},
journal   = {Journal of Materials Science Letters}
}