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\bibitem{Retuerto_etal2019} {\textquotedblleft}\textit{La$_{1.5}$Sr$_{0.5}$NiMn$_{0.5}$Ru$_{0.5}$O$_{6}$ double perovskite with enhanced ORR/OER bifunctional catalytic activity}{\textquotedblright}. Retuerto M, Calle-Vallejo F, Pascual L, Lumbeeck G, Fernandez-Diaz MT, Croft M, Gopalakrishnan J, Pena MA, Hadermann J, Greenblatt M, Rojas S, ACS applied materials and interfaces \textbf{11}, 21454 (2019).   http://doi.org/10.1021/ACSAMI.9B02077

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