WENDEL, J. G. A Problem in Geometric Probability. MATHEMATICA SCANDINAVICA, [S. l.], v. 11, p. 109–112, 1962. DOI: 10.7146/math.scand.a-10655. Disponível em: https://www.mscand.dk/article/view/10655. Acesso em: 11 apr. 2025.