1. Air Transport Action Group, 2018. Aviation: Benefits Beyond Borders. Tech. rep., Air Transport Action Group.
2. Ayasdi, 2015. Why Topological Data Analysis Works. https://www.ayasdi.com/blog/bigdata/why-topological-data-analysis-works/.
3. Integrated surface-airspace model of airport departures;Badrinath;J. Guid. Control Dyn.,2019
4. Bauer, Ulrich, Kerber, Michael, Reininghaus, 2017. PHAT (Persistent Homology Algorithm Toolbox). https://bitbucket.org/phat-code/phat.
5. On the multi-dimensionality and sampling of air transport networks;Belkoura;Transp. Res. Part E: Logist. Transp. Rev.,2016