Burskii, V.P. (1993) “On the uniqueness of solutions to some boundary-value problems for differential equations in a domain with algebraic boundary”,
Ukrains’kyi Matematychnyi Zhurnal, 45(7), pp. 898–906. Available at:
https://umj.imath.kiev.ua/index.php/umj/article/view/5882 (Accessed: 7 April 2025).