Good study of Investiture Controversy?

Oct 2012
229
Can anyone suggest a good study of the Investiture Controversy, by someone who understands the power politics involved (i.e. not Ute-Renate Blumenthal).

Thanks.
 
Jul 2007
1,680
Australia
Chronicles of the Investiture Contest : Frutolf of Michelsberg and His Continuators trans T. J. H. McCarthy