 
 Verhältnismäßigkeit
 Zur Tragfähigkeit eines verfassungsrechtlichen Schlüsselkonzepts 
  Edited by Matthias Jestaedt and Oliver Lepsius 
 
[Proportionality. The Durability of a Key Constitutional Concept.]
 2015. VIII, 311 pages.    Summary 
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  Summary 
 The principle of proportionality appears to be the master key to unlock closed doors in today's world of differentiated rights. This volume traces the fact that the high amount of practical experience in dealing with proportionality is, however, unmistakably undertheorized.
  