Frédéric Babonneau, Jean-Philippe Vial, An Efficient Method to Compute Traffic Assignment Problems with Elastic Demands, Transportation Science, Vol. 42, No. 2 (May 2008), pp. 249-260 ...

An example of the quadratic assignment problem (QAP) is the facility location problem, in which n facilities are assigned, at minimum cost, to n sites. Between each pair of facilities, there is a ...