OchakovskayaO. A. “On the Injectivity of the Pompeiu Transform for Integral Ball Means”. Ukrains’kyi Matematychnyi Zhurnal 63, no. 3 (March 25, 2011): 361-368. Accessed November 23, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/2722.