http://www.iata.org/publications/economic-briefings/value-of-air-cargo-2016-summary.pdf
https://www.mckinsey.com/~/media/mckinsey/industries/private%20equity%20and%20principal%20investors/our%20insights/mckinseys%20private%20markets%20annual%20review/mckinsey-global-private-markets-review-2020-vf.ashx
https://medium.com/s/story/why-asian-consumers-are-faster-adopters-of-technology-77c490c4e8d5
https://www.iwkoeln.de/fileadmin/user_upload/Studien/IW-Trends/PDF/2018/IW-Trends_2018-03-07_Unternehmensaufspaltungen.pdf?mc_cid=e15c2358cf&mc_eid=286ad5ef5f