Petrosyan, A. I. “THE PARAMETRIC REPRESENTATION OF THE SPACE $b_\alpha^2$ OF HARMONIC FUNCTIONS”. Proceedings of the YSU A: Physical and Mathematical Sciences 42, no. 2 (216) (September 19, 2023): 13–17. Accessed November 23, 2024. https://journals.ysu.am/index.php/proceedings-phys-math/article/view/vol42_no2_2008_p013-017.