WASET
    Diana Fajardo and  Sebastián Ortiz and  Oscar Herrera and  Angélica Santis,  A Comparative Analysis of Heuristics Applied to Collecting Used Lubricant Oils Generated in the City of Pereira, Colombia.   journal   = {International Journal of Transport and Vehicle Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2016, vol. 120(12). 1548 - 1556
    [viewed 16 April 2024]. Available from: https://publications.waset.org/pdf/10005914.