TONG, J. Approximation by Nearest Integer Continued Fractions. MATHEMATICA SCANDINAVICA, [S. l.], v. 71, p. 161–166, 1992. DOI: 10.7146/math.scand.a-12418. Disponível em: https://www.mscand.dk/article/view/12418. Acesso em: 14 apr. 2025.