ABELE, S.; GRAVINA, A. Das neue Reservierungssystem WLB-Riserva. WLBforum, Stuttgart, v. 23, n. 1, p. 29–31, 2021. DOI: 10.53458/wlbf.v23i1.43. Disponível em: https://journals.wlb-stuttgart.de/ojs/index.php/wlbf/article/view/43. Acesso em: 21 jan. 2022.