References
- Christofides N. , Graph Theory: An Algorithmic Approach , Academic Press ( 1975 ) .
- Francis R. and White J. , Facility Layout and Location: An Analytical Approach , Prentice-Hall ( 1974 ) .
- Handler G. and Mirchandani P. , Location on Networks , M.I.T. Press ( 1979 ) .
- Lawler E. , Combinatorial Optimization: Networks and Matroids , Holt , Rinehart, and Winston ( 1976 ) .
- Minieka E. , Optimization Algorithms for Networks and Graphs , Marcel Dekker ( 1978 ) .
- Nijenhuis A. and Wilf H. , Combinatorial Algorithms , Academic Press ( 1975 ) .