@ARTICLE\{IMM1999-0572,
    author       = "S. E. Karisch and E. Cela and J. Clausen and T. Espersen",
    title        = "A dual framework for lower bounds of the quadratic assignment
problem based on linearization",
    year         = "1999",
    keywords     = "Quadratic Assignment, Branch and Bound",
    pages        = "351
- 403",
    journal      = "Computing",
    volume       = "63",
    editor       = "",
    number       = "",
    publisher    = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/572-full.html"
}