Wong, M. W. (2006) “Erhling’s Inequality and Pseudo-Differential Operators on 𝐿ᵖ(IRá´º)”, CUBO, A Mathematical Journal, 8(1), pp. 97–108. Available at: https://cubo.ufro.cl/index.php/cubo/article/view/1614 (Accessed: 2 November 2025).