The Correlation between the Complexities of the Nonhierarchical and Hierarchical Versions of Graph Problems.

Thomas Lengauer Klaus W. Wagner The Correlation between the Complexities of the Nonhierarchical and Hierarchical Versions of Graph Problems. 63-93 1992 44 J. Comput. Syst. Sci. 1 db/journals/jcss/jcss44.html#LengauerW92