HAMMAMI, M. A. Global Observer for Homogegeous Vector Fields. Nonlinear Analysis: Modelling and Control, [S. l.], v. 10, n. 3, p. 197–210, 2005. DOI: 10.15388/NA.2005.10.3.15119. Disponível em: https://www.zurnalai.vu.lt/nonlinear-analysis/article/view/15119. Acesso em: 17 jun. 2025.