An early assessment of the impact of COVID-19 on air transport: Just another crisis or the end of aviation as we know it?

Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre (Elsevier Connect) - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active. 23 September 2020; https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7269949