Calió, F., E. Marchetti, and V. Mureșan. “Theoretical and Numerical Results about Some Weakly Singular Volterra-Fredholm Equations”. Rev. Anal. Numér. Théor. Approx. 37, no. 1 (February 1, 2008): 27–36. Accessed May 2, 2024. https://ictp.acad.ro/jnaat/journal/article/view/2008-vol37-no1-art3.