PETROVA, E. A brief overview of the types of ETFs. Annals of Spiru Haret University. Economic Series , [S. l.], v. 15, n. 3, p. 39–46, 2015. DOI: 10.26458/1534. Disponível em: https://anale.spiruharet.ro/economics/article/view/1534. Acesso em: 28 apr. 2024.