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A branch and bound algorithm for the two-level uncapacitated facility location problem with some side constraints
Ro, Hyung-bong, (1984)
B: OPTIMAL ALLOCATION - Design of communication networks with survivability constraints Bb:220
Myung, Young-Soo, (1999)
Optimal Load Balancing on SONET Bidirectional Rings
Myung, Young-Soo, (1997)