Le Dinh Chien, Ngo Thanh Hai, S.T.Kolaczkowski, and D.W.J. McClymont. 2016. “Carbonyl Sulfide Presence in Syngas Stream Produced from Biomass Gasification Processes: Measurement and Calculation”. Petrovietnam Journal 10 (October), 48 - 53. http://pvj.com.vn/index.php/TCDK/article/view/350.