1. Andersson, G., Normark, T., 1995. Aggregation methods for large-scale location problems on networks. Master’s Thesis, Royal Institute of Technology, Stockholm, Sweden
2. Casillas, P.A., 1987. Data aggregation and the p-median problem in continuous space. In: Gosh, A., Rushton, G. (Eds.), Spatial Analysis and Location–Allocation Models. Van Nostrand Reinhold, New York, pp. 327–344
3. Location–allocation problems;Cooper;Operations Research,1963
4. Elimination of source A and B errors in p-median location problems;Current;Geographical Analysis,1987
5. Erkut, E., Bozkaya, B., 1996. Analysis of aggregation errors for the p-median problem. Research Report No. 96-3. Department of Finance and Management Science, University of Alberta, Edmonton, Alberta, Canada T6G 2R6