WASET
    Oscar Javier Herrera and  Manuel Ángel Camacho,  Forecast Based on an Empirical Probability Function with an Adjusted Error Using Propagation of Error.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2015, vol. 102(6). 1935 - 1939
    [viewed 28 March 2024]. Available from: https://publications.waset.org/pdf/10001699.