Zolotarevski, V. A. “ Direct Methods for Solving Singular Integral Equations on Closed Smooth Contour in Spaces \( L_p \)”. Rev. Anal. Numér. Théor. Approx. 25, no. 1 (August 1, 1996): 257–265. Accessed September 3, 2025. https://www.ictp.acad.ro/jnaat/journal/article/view/1996-vol25-nos1-2-art26.