Synthesis, structural and physical properties of δ'-FeSe1-xM. de Souza, A.-A. Haghighirad, U. Tutsch, W. Assmus and M. LangEur. Phys. J. B, 77 1 (2010) 101-107DOI: https://doi.org/10.1140/epjb/e2010-00254-7