Barbosa, A., 		Malcher, P., & 		Santos, R.
(2023).
 SIGMA Net Zero: A Carbon Footprint Accounting and Greenhouse Gas Emissions Management System.
In <em>Companion Proceedings of the 19th Brazilian Symposium on Information Systems</em>, (pp. 81-83). Porto Alegre: SBC.
doi:10.5753/sbsi_estendido.2023.229190