An Ecosystem of Social Innovation? Analysis of the Role of the Actors Who Make Up 4h in the Aveiro Region, Portugal Ana Rita Godinho Ferreira Pereira Bernadete de Lourdes Bittencourt Publication Journal: Revista de Gestão Social e Ambiental Year of Publication: 2024 Identifiers ISSN: 1981-982X Other Numbers: cv-prod-id-4969366 Alternative titles DOIGoogle ScholarBibTeXRIS Locators