WASET
    Jorge Ramírez-Ortiz and  Jorge Medina-Valtierra and  Merced Martínez Rosales,  Used Frying Oil for Biodiesel Production Over Kaolinite as Catalyst.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2011, vol. 56(8). 710 - 713
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/6875.