Antunes, Vanessa; Valadas, Sara; Candeias, Antonio; Mirão, Joseph; Cardoso, Pessanha, Sofia; Meek, Martha, Carvalho, Mary L., still lifes in earth materials: technical and ideological evolution from Balthazar Gomes Fig tree to Josefa d 'Óbidos, 6th International Conference on Particle Induced X-ray Emission (PIXE2019), Caldas of the Queen, 24- March 29, 2019,https://i.pixe2019.org/event/1/