[1]
M. N. Feller, “Cauchy problem for non-linear equations involving the Levy laplacian with separable variables”, MFAT, vol. 5, no. 4, pp. 9–14, Dec. 1999, Accessed: Dec. 17, 2025. [Online]. Available: https://zen.imath.kiev.ua/index.php/mfat/article/view/103