WASET
    Lina Wu and  Ye Li and  Jia Liu,  Applying p-Balanced Energy Technique to Solve Liouville-Type Problems in Calculus.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    April 2018, vol. 138(6). 100 - 105
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10009051.