Astuti, T.; Amir, Y.; Irdawati; Santoso, U. Nutritional Improvement of Palm Oil Fronds for Ruminant Feedstuffs Using a Local Biotechnological Approach. Pak. J. Nutr. 2016, 15 (5), 450–454. https://doi.org/10.3923/pjn.2016.450.454.