Zolotarevski, V. A. (1996). Direct methods for solving singular integral equations on closed smooth contour in spaces \( L_p \).
Rev. Anal. Numér. Théor. Approx.,
25(1), 257-265.
https://ictp.acad.ro/jnaat/journal/article/view/1996-vol25-nos1-2-art26