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The symmetric traveling salesman polytope revisite
NADDEF, DENIS, (1998)
The Optimal Diversity Management Problem
Briant, Olivier, (2004)
A remark on "Integer linear programming formulation for a Vehicle Routing Problem" by N.R. Achutan and L. Caccetta, or how to use the Clark & Wright savings to write such integer linear programming formulations
Naddef, Denis, (1994)