Talula Cartwright 
Managing Conflict with Peers (Spanish for Spain) [PDF ebook] 

Peer conflicts that arise from incompatible goals or from different views on how a task should be accomplished can usually be resolved. But peer conflicts that involve personal values, office politics and power, and emotional reactions are much more difficult to deal with. These seemingly intractable conflicts require careful attention if managers want to build effective relationships that will bolster their ability to achieve organizational goals.