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Models for public systems analysis
Beltrami, Edward J., (1977)
Economics and operational research
Beilby, Michael H., (1975)
Optimization and industrial experimentation
Biles, William E., (1980)
Polynomially Bounded Algorithms for Locating p-Centres on a Tree
Chandrasekaran, R., (1978)
An O((n lOg p)2) Algorithm for the Continous P-Center Problem on a Tree
Chandrasekaran, R., (1979)
On the Complexity of Point Covering and Line Covering
Meggido, N., (1981)