Ons Sassi and Wahiba Ramdane Cherif-Khettaf and Ammar Oulamara, Vehicle Routing Problem with Mixed Fleet of Conventional and Heterogenous Electric Vehicles and Time Dependent Charging Costs. journal = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology. February 2015, vol. 99(3). 171 - 181 [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/10000760.