Ditka vs. Ryan: The Feud That Fueled the '85 Chicago Bears - WSJ
Buddy Ryan, NFL coach and defensive mastermind, dies at 82
Super Bowl XX: 1985 Bears defense pounds Patriots - Sports
Buddy Ryan: How Bears coach invented the 46 defense - Sports
UP AGAINST IT - Sports Illustrated Vault
Buddy Ryans 46 Defense Jerry Campbell Football
Buddy Ryan: How Bears coach invented the 46 defense - Sports
Play Like You Mean It: Passion, Laughs, and Leadership in the
Buddy Ryan, NFL coach and defensive mastermind, dies at 82
Pro Football Journal: The 1966 Miami Dolphins and the 46 Defense