From the reviews: "The book contains more than 200 pages and 75 references. It is very well written and structured and, in particular, the extensive computational results and the numerous examples provide an excellent insight into the Discrete Ordered Median Problem." (Stefan Nickel, Zentralblatt MATH, Vol. 1042, 2004) "This book is excellent for researchers specialized in location theory and it is a great example for graduate students (especially in combinatorial optimization) to see how a well-thought, well-written dissertation looks like." (Peter Hajnal, Acta Scientiarum Mathematicarum, Vol. 70, 2004)