BAXTER, Glenn. An Analysis of the Annual Carbon Dioxide Emissions (CO2) of a Major European Hub Airport: A Case Study of Frankfurt Airport. International Journal of Environment, Agriculture and Biotechnology, [S. l.], v. 7, n. 1, 2022. Disponível em: https://journal-repository.com/index.php/ijeab/article/view/4649.. Acesso em: 2 may. 2025.