Boulares, Hamid, Hamza Guebbai, and Amira Arbaoui. “Fourier Series Approximation for the Cauchy Singular Integral Equation”.
J. Numer. Anal. Approx. Theory 47, no. 1 (August 6, 2018): 20–25. Accessed April 11, 2025.
https://ictp.acad.ro/jnaat/journal/article/view/1127.