Polynomial-Exponential Bounds for Some Trigonometric and Hyperbolic Functions. - Yogesh J. Bagul; Ramkrishna M. Dhaigude; Marko Kostic; Christophe Chesneau (Axioms, 2021)

Bounds for Quotients of Inverse Trigonometric and Inverse Hyperbolic Functions. - Sumedh B. Thool; Yogesh J. Bagul; Ramkrishna M. Dhaigude; Christophe Chesneau (Axioms, 2022)