Osmium and magnesium: structural segregation in the rare earth-rich intermetallics RE4OsMg (RE=La–Nd, Sm) and RE9TMg4 (RE=Gd, Tb). - Block, Theresa; Stein, Sebastian; Heletta, Lukas; Pöttgen, Rainer (Zeitschrift für Naturforschung B: A Journal of Chemical Sciences, 2019)