C.J. Eom, D-Y. Kuo, C. Adamo, E.J. Moon, S.J. May, E.J. Crumlin, D.G. Schlom, and J. Suntivich, “Tailoring Manganese Oxide with Atomic Precision to Increase Surface Site Availability for Oxygen Reduction Catalysis,” Nature Communications 9 (2018) 4034-1 – 4034-7.