Leite, F., G. Aggio, and E. Angeli. “Public Indebtedness, Growth, Currency and Inflation: Comment on ‘Pleasant Mathematics’, by Gerson Lima”. Brazilian Journal of Political Economy, vol. 29, no. 4, Oct. 2009, pp. 473-8, https://centrodeeconomiapolitica.org/repojs/index.php/journal/article/view/509.