WANG, C.; WANG, Y.; LI, N.; MA, T. Spatial differentiation of China’s industrial enterprise R&D efficiency. ERDKUNDE, [S. l.], v. 73, n. 3, p. 199–210, 2019. DOI: 10.3112/erdkunde.2019.03.04. Disponível em: https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/2866. Acesso em: 4 dec. 2024.