C.H. Choi, H.-K. Lim, A. Altin, N. Ranjbar-Sahraie, M.T. Sougrati, L. Stievano, H.S. Oh, E.S. Park, P. Strasser, K.J.J. Mayrhofer, H. Kim, F. Jaouen, “Achilles’ heel of iron-based catalysts during oxygen reduction in acidic medium”, Energy & Environmental Science, 11 (2018) 3176.