Huda, Miftahul, et al. “Analysis of Deflection and Moment Capacity on the Precast Beam of the Nk-Spircon Connecting System”. International Journal of Engineering & Technology, vol. 7, no. 3.25, Aug. 2018, pp. 458-62, https://doi.org/10.14419/ijet.v7i3.25.17730.