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Hakam, A., Imron, C., Widodo, B. and Yuwono, T.Y. 2018. REDUCING THE DRAG ON A CIRCULAR CYLINDER BY UPSTREAM INSTALLATION OF CYLINDER TYPE-I AND DOWNSTREAM INSTALLATION OF ELLIPSE CYLINDER . MATTER: International Journal of Science and Technology. 4, 1 (Mar. 2018), 26–39. DOI:https://doi.org/10.20319/mijst.2018.41.2639.