V. Nguyen, L. Nguyen, S. Pham, T. Nguyen, T. Phan, and T. Nguyen, “Investigate coir fibers’ properties produced by coconut fiber extracting machine in Ben Tre and research the treatment for fiber with NaOH solution”, Science and Technology Development Journal, vol. 17, no. 2, pp. 93-102, Jun. 2014.