Multi-Block Copolymer Membranes Consisting of Sulfonated Poly(<i>p</i>-phenylene) and Naphthalene Containing Poly(arylene Ether Ketone) for Proton Exchange Membrane Water Electroly... oleh Eui Jin Ko, Eunju Lee, Jang Yong Lee, Duk Man Yu, Sang Jun Yoon, Keun-Hwan Oh, Young Taik Hong, Soonyong So