MURPHY, J. Measures of map accuracy assessment and some early Ulster maps. Irish Geography, [S. l.], v. 11, n. 1, p. 88–101, 2016. DOI: 10.55650/igj.1978.828. Disponível em: https://irishgeography.ie/index.php/irishgeography/article/view/828. Acesso em: 30 apr. 2026.