Has there ever been a mid-air collision involving more than two aircraft? If so, how did it happen? - Quora
Who Made The Mistake That Ended In Disaster? (Aeromexico Flight 498) - DISASTER BREAKDOWN
Midair collisions to metal fatigue: tragedies that changed air travel, Airline industry
Crash of Aerome´xico Flight 498, Cerritos — Calisphere
List: Aviation, Curated by David H Villarreal
Fear of Landing – Mid-Air Collision over Cerritos in 1986
What would happen if an Air Traffic Controller caused two Airplanes to collide and crash? - Quora
1986 Cerritos mid-air collision
How is it possible for planes to collide in mid air flight? What are some examples of this happening? - Quora
How the deadly 1986 Cerritos midair collision ultimately made air travel safer for all – Orange County Register
Cruelty of Chance: The Cerritos mid-air collision and the crash of Aeroméxico flight 498, by Admiral Cloudberg
Pacific Southwest Airlines Flight 182 - Wikipedia
Has there ever been a mid-air collision involving more than two aircraft? If so, how did it happen? - Quora