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English | N 633 ROS.N | 
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    Apeldoorn, Netherlands : Maklu, [1987] 
English | P 216 DEU.L | 
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                | 3. | 
        
    Aldershot : Ashgate, 2007. | 
                | 4. | 
        
    Apeldoorn, Netherlands : Maklu, 1994. 
English | P 230 ALL.D | 
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                | 5. | 
        
    Stanford, Calif. : Stanford Law and Politics, 2004.First edition.
 
English | N 13 FIS.P | 
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