GROBBELAAR, S.; BUYS, A. A CONCEPTUAL SYSTEMS DYNAMICS MODEL OF RESEARCH AND DEVELOPMENT ACTIVITIES IN SOUTH AFRICA. The South African Journal of Industrial Engineering, [S. l.], v. 16, n. 2, 2011. DOI: 10.7166/16-2-169. Disponível em: http://sajie.journals.ac.za/pub/article/view/169. Acesso em: 22 nov. 2024.