BATLLÓ, J. Influence of Giulio Grablovitz in Spain: instruments and scientific correspondence. Annals of Geophysics, [S. l.], v. 52, n. 6, p. 699–707, 2009. DOI: 10.4401/ag-4626. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/4626. Acesso em: 1 oct. 2022.