N. A. Kachanovsky, “Dual Appell-like systems and finite order spaces in non-Gaussian infinite dimensional analysis”, MFAT, vol. 4, no. 2, pp. 41–52, Jun. 1998, Accessed: Feb. 04, 2026. [Online]. Available: https://zen.imath.kiev.ua/index.php/mfat/article/view/59