A branch-and-cut approach for minimum cost multi-level network design.

Sunil Chopra Chih-Yang Tsai A branch-and-cut approach for minimum cost multi-level network design. 65-92 2002 242 Discrete Mathematics 1-3 http://dx.doi.org/10.1016/S0012-365X(00)00404-0 db/journals/dm/dm242.html#ChopraT02