Mahadi, M.
(2020).
 Manufacture and Strength Analysis of Ergonomic Bicycle Helmet Made from Polymeric Foam Composite Strengthened by Oil Palm Empty Fruit Bunch Fiber with Free Fall Drop Test Method.
<em>Journal Of Ocean, Mechanical And Aerospace -Science And Engineering-, 64</em>(1), 33-38.
doi:10.36842/jomase.v64i1.160