Cristian Păuna,  Price Prediction Line, Investment Signals and Limit Conditions Applied for the German Financial Market.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2019, vol. 153(9). 468 - 477
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/10010724.