GHARIBIAN, T. L. ON LOCATION OF SPIRAL SINGULARITIES OF POWER SERIES. II. Proceedings of the YSU A: Physical and Mathematical Sciences, Yerevan, Armenia, v. 35, n. 3 (196), p. 18–25, 2001. DOI: 10.46991/PYSUA.2001.35.3.018. Disponível em: https://journals.ysu.am/index.php/proceedings-phys-math/article/view/vol35_no3_2001_pp018-025. Acesso em: 21 jan. 2026.