TELYAKOVSKII, S. A. On the properties of blocks of terms of the series $\sum \cfrac1k \sin kx$. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 64, n. 5, p. 713–718, 2012. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2610. Acesso em: 5 dec. 2025.