Trench, William F. “Simplification and Strengthening of Weyl’s Definition of Asymptotic Equal Distribution of Two Families of Finite Sets”. CUBO, A Mathematical Journal 6, no. 3 (October 1, 2004): 47–54. Accessed October 12, 2025. https://cubo.ufro.cl/index.php/cubo/article/view/1632.