LAL, S.; SINGH, G. K. Degree of approximation of conjugate of Lip $ \alpha$ class function by $ {K^\lambda}$-summability means of conjugate series of a Fourier series. Tamkang Journal of Mathematics, [S. l.], v. 34, n. 4, p. 387–394, 2003. DOI: 10.5556/j.tkjm.34.2003.241. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/241. Acesso em: 19 apr. 2024.