I. G. N. . Nitya Santhiarsa, I. G. A. A. Praharsini, I. G. A. Alit Suryawati, and P. Pratikto, “Analysis of mechanical strength of weight fraction variation sugar palm fiber as polypropylene-elastomer matrix reinforcement of hybrid composite”, EEJET, vol. 5, no. 12(113), pp. 20–29, Oct. 2021.