BROOKFIELD, M. E.; COUTO, H.; CATLOS, E. J.; SCHMITT, A. . U-Pb SIMS zircon ages for Cambro-Ordovician rocks, Valongo Anticline, northwestern Portugal. Journal of Mediterranean Earth Sciences, [S. l.], v. 13, 2021. DOI: 10.13133/2280-6148/17274. Disponível em: https://rosa.uniroma1.it/rosa04/mediterranean_earth_sciences/article/view/17274. Acesso em: 25 oct. 2021.