SLIŽIENĖ, Gražina. Problem of the direct visibility lines between the adjacent boundary marks. Geodesy and Cartography, [S. l.], v. 35, n. 3, p. 110–113, 2012. DOI: 10.3846/1392-1541.2009.35.110-113. Disponível em: https://journals.vilniustech.lt/index.php/GAC/article/view/10869. Acesso em: 9 may. 2025.