1 K. J. Devlin, "The Millennium Problems: The Seven Greatest Unsolved Mathematical Puzzles of Our Time" Basic Books 2002
2 R. Church, "The Maximal Covering Location Problem" 32 (32): 101-118, 1974
3 D. Serra, "Surviving in a Competitive Spatial Market: The Threshold Capture Model" 39 (39): 637-650, 1999
4 L Carsten, "On the Hardness of Approximating Minimization Problems" 41 (41): 960-981, 1994
5 L. Dawei, "Model and Algorithms for Emergency Service Facility Location Problem" IEEE Computer Science 15-19, 2009
6 "List of NP-complete Problems" Wikipedia Foundation Inc
7 R. J. Vanderbei, "Linear Programming: Foundations and Extensions" Springer Verlag 114 : 2008
8 R. Z. Farahani, "Facility Location: Concepts, Models, Algorithms and Case Studies" Springer-Verlag Berlin Heidelberg 2009
9 R. M. Karp, "Complexity of Computer Computations, In Complexity of Computer Computations" Plenum 85-103, 1972
10 J. E. Storbeck, "A Simple Trade-off Model for Maximal and Multiple Coverage" 20 (20): 220-230, 1988
1 K. J. Devlin, "The Millennium Problems: The Seven Greatest Unsolved Mathematical Puzzles of Our Time" Basic Books 2002
2 R. Church, "The Maximal Covering Location Problem" 32 (32): 101-118, 1974
3 D. Serra, "Surviving in a Competitive Spatial Market: The Threshold Capture Model" 39 (39): 637-650, 1999
4 L Carsten, "On the Hardness of Approximating Minimization Problems" 41 (41): 960-981, 1994
5 L. Dawei, "Model and Algorithms for Emergency Service Facility Location Problem" IEEE Computer Science 15-19, 2009
6 "List of NP-complete Problems" Wikipedia Foundation Inc
7 R. J. Vanderbei, "Linear Programming: Foundations and Extensions" Springer Verlag 114 : 2008
8 R. Z. Farahani, "Facility Location: Concepts, Models, Algorithms and Case Studies" Springer-Verlag Berlin Heidelberg 2009
9 R. M. Karp, "Complexity of Computer Computations, In Complexity of Computer Computations" Plenum 85-103, 1972
10 J. E. Storbeck, "A Simple Trade-off Model for Maximal and Multiple Coverage" 20 (20): 220-230, 1988
11 M. S. Daskin, "A Hierarchical Objective Set Covering Model for Emergency Medical Service Vehicle Deployment" 15 (15): 137-152, 1981
12 V. Chvatal, "A Greedy Heuristic for the Set- Covering Problem" 4 (4): 233-235, 1979