Tourism and Air Quality during COVID-19 Pandemic: Lessons for the Future Alexandra Monteiro Celeste Eusébio Maria João Carneiro Mara Madaleno Margarita Robaina Vitor Rodrigues Carla Gama Hélder Relvas Michael Russo Kevin Oliveira Myriam Lopes Carlos Borrego Publication Journal: Sustainability Year of Publication: 2021 Volume: 13 Issue: 7 Pagination: 3906 Identifiers Other Numbers: 91590103 Alternative titles DOIGoogle ScholarBibTeXRIS Locators