BagulYogesh J., ThoolSumedh B., Christophe Chesneau, and DhaigudeRamkrishna M. “Refinements of Some Classical Inequalities Involving Sinc and Hyperbolic Sinc Functions”. Annales Mathematicae Silesianae 37, no. 1 (November 23, 2022): 1-15. Accessed April 28, 2024. https://journals.us.edu.pl/index.php/AMSIL/article/view/14911.