Physical property characterization of single step synthesized NdFeAsO0.80F0.20 bulk 50 K superconductorV. P.S. Awana, R. S. Meena, A. Pal, A. Vajpayee, K. V.R. Rao and H. KishanEur. Phys. J. B, 79 2 (2011) 139-146DOI: https://doi.org/10.1140/epjb/e2010-10674-x