Postnikov, E.B. “The Representation of a Wavelet Transform of the Gaussian Family by a Superposition of Solutions to Partial Differential Equations”. Numerical Methods and Programming (Vychislitel’nye Metody i Programmirovanie) 9, no. 15 (March 15, 2008): 84–89. Accessed April 19, 2024. https://en.num-meth.ru/index.php/journal/article/view/299.