Petrosyan, A.I., and E.S. Mkrtchyan. “DUALITY IN SOME SPACES OF FUNCTIONS HARMONIC IN THE UNIT BALL”. Proceedings of the YSU A: Physical and Mathematical Sciences 47, no. 3 (232) (November 20, 2013): 29–36. Accessed September 19, 2024. https://pub.ysu.am/index.php/proceedings-phys-math/article/view/vol47_no3_2013_pp029-036.