Nur Zahirah Zulhaimi and  KuZilati KuShaari and  Zakaria Man,  Characterization of Chemically Modified Biomass as a Coating Material for Controlled Released Urea by Contact Angle Measurement.   journal   = {International Journal of Chemical and Materials Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2011, vol. 58(10). 876 - 880
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/2653.