Marques, Célio, Costa, Etelberto, Candeias, Adelinda, Trindade, Anícia, Vieira, Vanda, Reis, Cristina, Rebordão, Herculano, AND Peres, Paula. " Lifelong learning in the european space: proposal for an observatory" Superavit [Online], Volume 2(16 October 2017)