@techreport{Koster99,
author = "A.M.C.A Koster and van Hoesel, S.P.M and A.W.J. Kolen",
address = "Maastricht, The Netherlands",
institution = "Universiteit Maastricht",
number = "RM/99/011",
title = "{S}olving {F}requency {A}ssignment {P}roblems via
                   {T}ree-{D}ecomposition",
year = "1999",
}