KREBS, Mike. Finite $\epsilon$-unit distance graphs. Journal of Algebra Combinatorics Discrete Structures and Applications, [S. l.], v. 8, n. 3, p. 161–166, 2021. DOI: 10.13069/jacodesmath.1000784. Disponível em: https://jacodesmath.com/index.php/jacodesmath/article/view/159. Acesso em: 5 aug. 2026.