Djamaluddin, R. , Bachtiar, Y. , Irmawati, R. , Akkas, A. , Latief, R.. "Effect of the Truss System to the Flexural Behavior of the External Reinforced Concrete Beams". World Academy of Science, Engineering and Technology, Open Science Index 90, International Journal of Civil and Environmental Engineering (2014), 8(6), 691 - 695.