C. R. Dennison, H. Vrubel, V. Amstutz, P. Peljo, K. E. Toghill, and H. H. Girault, “Redox Flow Batteries, Hydrogen and Distributed Storage”, Chimia, vol. 69, no. 12, p. 753, Dec. 2015, doi: 10.2533/chimia.2015.753.