Search of optimal connection lines using the graph method. Economics and region, [S. l.], n. 1(88), p. 166–173, 2023. DOI: 10.26906/EiR.2023.1(88).2886. Disponível em: https://ojs35.nupp.edu.ua/eir/article/view/2886. Acesso em: 23 dec. 2025.