ORPONEN, T.; SAHLSTEN, T. Radial projections of rectifiable sets. Annales Fennici Mathematici, [S. l.], v. 36, n. 2, p. 677–681, 2011. DOI: 10.5186/aasfm.2011.3634. Disponível em: https://afm.journal.fi/article/view/135373. Acesso em: 11 apr. 2025.