|  1984-1989:  |  
 Studies of Technical Mathematics at the 
 Graz University of Technology.  | 
 |  November 1989:  |   Graduation to "Diplom Ingenieur" 
(similar to M.Sc. degree) at the Graz University of Technology.  | 
|     |  Diploma thesis on "Maximum flow problems and 
minimum cut problems with affine-linear capacities".  | 
|     |  (Supervisor: 
Prof. Rainer E. Burkard).  | 
 |  1990-1993:  |  
 Doctoral Studies at the 
Department of Mathematics, Graz University of Technology. 
   | 
 |  October 1993:  |   Graduation to "Dr. techn." (Ph.D. degree) 
at the Graz University of Technology.  | 
|     |  Ph.D. thesis on "Parametric Approaches to 
Special Classes of Minimum Concave Cost and Dynamic Flow Problems".  | 
|     |  (Supervisor: Prof. Rainer E. Burkard).  | 
 |  November 1999:  |  
 Habilitation (venia legendi) for "Applied Mathematics" at the Graz
University of Technology.  | 
|     |  Habilitation thesis on "Well-Solvable Classes
of Hard Combinatorial Optimization Problems: The Role of  | 
 |     |  
Special Cost Matrices and Related Input Restrictions".  |