Li, Nanwen; Zhang, Qiang; Wang, Chenyi; Lee, Young Moo; Guiver, Michael D., "Phenyltrimethylammonium Functionalized Polysulfone Anion Exchange Membranes", Macromolecules, 45 (5), p.2411-2419, 2012, (http://dx.doi.org/10.1021/ma202681z).