LIEFNER, I.; ZENG, G. Cooperation patterns of high-tech companies in Shanghai and Beijing: accessing external knowledge sources for innovation processes. ERDKUNDE, [S. l.], v. 62, n. 3, p. 245–258, 2008. DOI: 10.3112/erdkunde.2008.03.05. Disponível em: https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/2614. Acesso em: 7 oct. 2024.