Mustikasari, A. R., et al. “The Effect of Using Acidified Imperata Cylindrica As a Co-Substrate With Dairy Cow Manure on the Digesters Performance”. Tropical Animal Science Journal, vol. 46, no. 3, Aug. 2023, pp. 361-6, https://doi.org/10.5398/tasj.2023.46.3.361.