List of Articles Integrating factor Open Access Article Abstract Page Full-Text 1 - Application of Variational Calculus to Integrability of Differential Equations with Physical Applications Mehmet Pakdemirli 10.30495/ijim.2023.72830.1665 Open Access Article Abstract Page Full-Text 2 - λ-Symmetry method and the Prelle-Singer method for third-order differential equations Khodayar Goodarzi