Brake and Front End Magazine:
Aug. 2004 : Understanding Brake Pad Construction Aug. 2004 : Silencing Brake Squeeeeeeeeeal Oct. 2006 : Selecting the Right Friction Material Dec. 2007 : From Rivets to Hooks
Counterman:
Feb. 2008 : Possible Causes of Mid-Life NVH Problems in Brake Pads (Page 2 sidebar)