Shehzad MA, Qaiser AA. Preparation and characterization of sulfonated polyether ether ketone membranes for fuel cell applications: A comparison with Nafion® membranes. JPIChE [Internet]. 2014 Jul. 18 [cited 2024 Apr. 20];42(1):55-62. Available from: http://piche.org.pk/journal/index.php/jpiche/article/view/147