BERARDI, Umberto. A Double Synthetic Index to Evaluate the Acoustics of Churches. Archives of Acoustics, [S. l.], v. 37, n. 4, p. 521–528, 2013. Disponível em: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/81. Acesso em: 28 apr. 2025.