Piętka, M. (1991) “Uniqueness of the solution of the Cauchy problem for the partial differential equations and the convolution equations”, Annales Mathematicae Silesianae, 5, pp. 57–67. Available at: https://trrest.vot.pl/ojsus/index.php/AMSIL/article/view/14282 (Accessed: 7 May 2025).