WASET
    Li Xiguang,  The Symmetric Solutions for Three-Point Singular Boundary Value Problems of Differential Equation.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    September 2013, vol. 77(5). 767 - 771
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/17076.