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Mujtaba, M.A.; Masjuki, H.H.; Kalam, M.A.; Ong, H.C.; Gul, M.; Farooq, M.; Soudagar, Manzoore Elahi M.; Ahmed, Waqar; Harith, M.H.; Yusoff, M.N.A.M. . (2020). Ultrasound-assisted process optimization and tribological characteristics of biodiesel from palm-sesame oil via response surface methodology and extreme learning machine - Cuckoo search. Renewable Energy, (), S0960148120308636–. doi:10.1016/j.renene.2020.05.158 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research