Hakam, A., Imron, C., Widodo, B., & 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), 26–39. https://doi.org/10.20319/mijst.2018.41.2639