VAN HERBRUGGEN, C. Beoordeling van de doelmatigheid der economische prognoses door vectorvergelijking. JORBEL - Belgian Journal of Operations Research, Statistics, and Computer Science, [S. l.], v. 10, n. 1, p. 3–32, 1970. Disponível em: https://www.orbel.be/jorbel/index.php/jorbel/article/view/321. Acesso em: 17 may. 2024.