MarkitanV. P., PratsiovytyiM. V., and SavchenkoI. O. 2018. “Superfractality of the Set of Incomplete sums of One Positive Series”. Ukrains’kyi Matematychnyi Zhurnal 70 (10), 1403-16. https://umj.imath.kiev.ua/index.php/umj/article/view/1644.