Dagnino, Caterina, and Elisabetta Santi. “ Numerical Evaluation of Cauchy Principal Value Integrals by Means of Nodal Spline Approximation”. Rev. Anal. Numér. Théor. Approx. 27, no. 1 (February 1, 1998): 59–69. Accessed September 3, 2025. https://www.ictp.acad.ro/jnaat/journal/article/view/1998-vol27-no1-art7.