Gesammelte Abhandlungen III / 
Siegel, Carl Ludwig, 
 - Berlin,  Springer,  1979 
 - v. III : 492 p.   port.  26 cm. 
<br/><br/> Pref. in English and German; text in German with parts in English, parts in Dutch. 
<br/><br/><label>ISBN: </label>978-3-662-48942-0