Akritas, Alkiviadis G. (1982). "Reflections on a Pair of Theorems by Budan and Fourier". Mathematics Magazine. 55 (5): 292–298. doi:10.2307/2690097. JSTOR2690097.
Akritas, Alkiviadis G. (1982). "Reflections on a Pair of Theorems by Budan and Fourier". Mathematics Magazine. 55 (5): 292–298. doi:10.2307/2690097. JSTOR2690097.