Lydiasari, H., Manalu, A. Y. and Karolina, R. (2017) “APPLICATION OF OIL PALM EMPTY FRUIT BUNCH FIBERS IN STRENGTH IMPROVEMENT AS A FIBER REINFORCED CONCRETE”, Jurnal Penelitian Kelapa Sawit, 25(3), pp. 161-170. doi: 10.22302/iopri.jur.jpks.v25i3.33.