Katima, J. H.Y., et al. “Na2SO3/NaCO3/PULPING/OF/SISAL/FIBRES:/EFFECTS/OF/ADDITION/OF/MgCl2/AND/SOAKING/OF/THE/FIBRES/IN/THE/COOKING/LIQUOR”. Tanzania Journal of Engineering and Technology, vol. 19, no. 1, Aug. 2018, https://journals.udsm.ac.tz/index.php/tjet/article/view/1955.