[1]
D. A. Zhuraev, “Cauchy problem for matrix factorizations of the Helmholtz equation”, Ukr. Mat. Zhurn., vol. 69, no. 10, pp. 1364–1371, Oct. 2017, Accessed: Dec. 06, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/1787