Giordano, Stefania, Mariangela Longhi, Leonardo Formaro, Hermes Farina, and Giuseppe Di Silvestro. 2013. “Electrochemical Behaviour of PES Ionomer and Pt-Free Catalyst for PEMFCs”. Journal of Electrochemical Science and Engineering 3 (3):115-23. https://doi.org/10.5599/jese.2013.0035.