Haruyama, S. , Nurhadiyanto, D. , Choiron, M. , Kaminishi, K. (2013), 'Surface Roughness of Flange Contact to the 25A-size Metal Gasket by using FEM Simulation', World Academy of Science, Engineering and Technology, Open Science Index 74, International Journal of Mechanical and Mechatronics Engineering, 7(2), 272 - 276.