http://www.dragothic.com/guides/protection-guide/
http://www.tankspot.com/forumdisplay.php?14-Theory-amp-Mechanics-Discussion
http://www.tankspot.com/forumdisplay.php?200-TankSpot-s-Critical-Guides-amp-Articles-Library
http://www.tankspot.com/forumdisplay.php?14-Theory-amp-Mechanics-Discussion
http://www.tankspot.com/forumdisplay.php?200-TankSpot-s-Critical-Guides-amp-Articles-Library