V.  Kumar, Chatterjee, S., Sharma, P., Chakrabarty, S., Avadhani, C. V., and Sivaram, S., ?Soluble polybenzimidazoles with intrinsic porosity: synthesis, structure, properties and processability?, 56Journal of Polymer Science Part A-Polymer Chemistry, vol. 56, no. 10, pp. 1046-1057, 2018.