Zvozdetskyi, T.I. “On the $n$-Similarity of the Operators Which Are Left Inverse to the $n^{th}$ Degree of the Integration Operator in the Spaces of Analytic Functions”. Carpathian Mathematical Publications 4, no. 2 (December 27, 2012): 261–267. Accessed May 2, 2024. https://scijournals.pnu.edu.ua/index.php/cmp/article/view/2270.