Syahin, AAT, et al. “EFFECT OF MICRO-RAMP VORTEX GENERATOR IN IMPROVING AERODYNAMICS PERFORMANCE OF WING-IN-GROUND CRAFT FUSELAGE”. PERINTIS EJournal, vol. 11, no. 1, Sept. 2021, pp. 61-69, https://perintis.org.my/ejournalperintis/index.php/PeJ/article/view/108.