1.
Abd-Elhameed WMM. An elegant operational matrix based on harmonic numbers: Effective solutions for linear and nonlinear fourth-order two point boundary value problems. NAMC [Internet]. 2016 Jul. 21 [cited 2024 Jul. 18];21(4):448-64. Available from: https://www.journals.vu.lt/nonlinear-analysis/article/view/13454