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/*                             AUTHOR :                                      */
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/* J"org Weule                       Mathematisches Institut der             */ 
/*                                   Heinrich-Heine-Universitaet Duesseldorf */
/* email: weule@cs.uni-duesseldorf.de              Abteilung fuer Informatik */
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/* Permission to use, copy, modify and distribute this software for any      */
/* purpose and without fee is hereby granted, provided that this copyright   */
/* notice appear in all copies as well as supporting documentation. All      */
/* work developed as a consequence of the use of this program should duly    */
/* acknowledge such use.                                                     */
/* ------------------------------------------------------------------------- */

