Belyaeva, I., N. Chekanov, N. Chekanova, I. Kirichenko, O. Ptashny, and T. Yarkho. “Calculation of the green’s Function of Boundary Value Problems for Linear Ordinary Differential Equations”. Eastern-European Journal of Enterprise Technologies, vol. 1, no. 4 (103), Feb. 2020, pp. 43-52, doi:10.15587/1729-4061.2020.193470.