KachanovskiiN. A. (1997) “Dual Appell system and Kondrat’ev spaces in analysis on Schwartz spaces”, Ukrains’kyi Matematychnyi Zhurnal, 49(4), pp. 527–534. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/5027 (Accessed: 24November2024).