NAIDOO, Puramanathan; VAN NIEKERK, Theo. Optimising position control of a solar parabolic trough. South African Journal of Science, [S. l.], v. 107, n. 3/4, p. 6 pages, 2011. Disponível em: https://sajs.co.za/article/view/10063. Acesso em: 1 apr. 2025.