Pereira, José ManuelÁlvares, Sílvia2020-04-162020-04-162016http://www.scielo.mec.pt/scielo.php?script=sci_arttext&pid=S0872-07542016000200001http://hdl.handle.net/10400.16/2347porFrom the Post-Gutenberg Galaxy to the era of Skywritingjournal article2020-04-16cv-prod-172863