Статья

Kejal Khatri.
Approximation of Signals (Functions) of Lip (α, p), (p ≥ 1)-class by Trigonometric Polynomials / Kejal Khatri, Vishnu Narayan Mishra // Publications de l'Institut Mathematique: Nouvelle serie. – 2018. – Т.104 (118). – C.251-264.