Reihe Theoretical Computer Science and General IssuesRonald de Haan × Parameterized Complexity in the Polynomial HierarchyExtending Parameterized Complexity Theory to Higher Levels of the HierarchyRonald de HaanSpringer BerlinSoftcover2019 Parameterized Complexity in the Polynomial HierarchyExtending Parameterized Complexity Theory to Higher Levels of the HierarchyRonald de HaanSpringer BerlineBook2019