Usman Safder+, Shahzeb Tariq+, ChangKyoo Yoo*, Multilevel optimization framework to support self-sustainability of industrial processes for energy/material recovery using circular integration concept, Applied Energy (ISSN: 0306-2619, SCI, Top 7% journal –ENGINEERING, CHEMICAL), Elsevier, 324(10), pp.119685 (2022.10)  (NRF중견2021R1A2C2007838  & Graduate School specialized in Climate Change)