Colloquium on Contributions to operator theory in spaces with an indefinite metric, Univ. of Vienna, Oct. 12-13, 1995 <br/><br/>
Contributions to operator theory in spaces with an indefinite metric; the Heinz Langer anniversary volume on his sixtieth birthday   
Ed. by A. Dijksma and others. 
 - Basel  Birkhauser Verlag  1998 
 - vi, 417p. 
 - Operator theory  advances and applications  v.106 .
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<br/><br/><label>Subjects--Index Terms: </label>
<br/><br/><label>Dewey Class. No.: </label>515.72  / C714.CO