Sourabh Jain and  Sukhvir Singh Jain and  Gaurav V. Jain,  Exploratory Data Analysis of Passenger Movement on Delhi Urban Bus Route.   journal   = {International Journal of Transport and Vehicle Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2017, vol. 130(10). 1378 - 1383
    [viewed 22 September 2019]. Available from: https://publications.waset.org/pdf/10007996.