Wang, D. Y. Grenzflächen, Max Planck Institute of Colloids and Interfaces, Max Planck Society;
Li, X. F., Hao, X. F., Xu, D., Zhang, G., Zhong, S. L., Na, H., et al. (2006). Fabrication of sulfonated poly(ether ether ketone ketone) membranes with high proton conductivity. Journal of Membrane Science, 281(1-2), 1-6. doi:10.1016/j.memsci.2006.06.002.