Professors and students´ perceptions about cross-cutting key competences for sustainability: A case study of Universidade Aberta (Lisboa) - María Majadas Matesanz; María José Bautista-Cerro Ruiz; Sandra Sofia Ferreira da Silva Caeiro; Paula Bacelar Nicolau (World Symposium on Sustainable Development at Universities (WSSD-U-2022), 2022)