Insaf Mehani and  Bachir Bouchekima,  Valorization of Waste Dates in South Algeria: Biofuel Production.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2015, vol. 105(9). 1180 - 1183
    [viewed 22 October 2019]. Available from: https://publications.waset.org/pdf/10003041.