SAMONIS, Valdas (Val). Sustaining Innovation: Theory and Policies for new Europe. Ekonomika, [S. l.], v. 68, p. 113–120, 2004. DOI: 10.15388/Ekon.2004.17400. Disponível em: https://www.journals.vu.lt/ekonomika/article/view/17400. Acesso em: 6 dec. 2025.