VILLUMSEN, A.; BRUUN-PETERSEN, J.; JACOBI, P.; NIELSEN, Åge. Improved graphical computer technique. Applied to mapping of geology and groundwater chemistry in Ribe Amtskommune, Denmark. Danmarks Geologiske Undersøgelse Serie C, [S. l.], v. 6, p. 1–27, 1986. DOI: 10.34194/seriec.v6.7100. Disponível em: https://geusjournals.org/index.php/seriec/article/view/7100. Acesso em: 3 jul. 2024.