Furdui, Ovidiu, and Alina Sîntămărian. “Cubic and Quartic Series With the Tail of \(\ln 2\)”. CUBO, A Mathematical Journal (April 24, 2023): 89–101. Accessed October 11, 2025. https://cubo.ufro.cl/index.php/cubo/article/view/3335.