USA today reference:
Cox, John. “Ask the Captain: Aft-Mounted vs. Wing-Mounted Engines.” USA Today, Gannett Satellite Information Network, 5 Apr. 2015, www.usatoday.com/story/travel/columnist/cox/2015/04/05/jet-engines/25244779/.
Smart City Columbus:
https://www.columbus.gov/smartcolumbus/projects/
All AEV documents found on Carmen