Process simulation and optimization of oxygen enriched combustion using thin polymeric membranes: effect of thickness and temperature dependent physical aging - Lock, Serene Sow Mun; Lau, Kok Keong; Shariff, Azmi Mohd; Yeong, Yin Fong; Ban, Zhen Hong; Tay, Wee Horng (Wiley Online Library, 2019)