Azizov, M. (1996) “On the complexity of boundary integral equations with analytic coefficients with logarithmic singularities”,
Ukrains’kyi Matematychnyi Zhurnal, 48(10), pp. 1299–1310. Available at:
https://umj.imath.kiev.ua/index.php/umj/article/view/5215 (Accessed: 10 April 2025).