Maier, V. “A New Proof for the Approximation of the Log-Function by Kantorovich Polynomials in the \(L_p\)-Norm”. Rev. Anal. Numér. Théor. Approx., vol. 28, no. 2, Aug. 1999, pp. 173-7, https://ictp.acad.ro/jnaat/journal/article/view/1999-vol28-no2-art7.