CHE-AP99: Description of the new ExcellenceRanking of CHE with information on methodology and general resultsAutoren: Berghoff, Sonja; Brandenburg, Uwe; Carr-Boulay, Diane J; Hachmeister, Cort-Denis; Müller-Böling, Detlef: Identifying the Best: The CHE Ranking of Excellent European Graduate Programmes in Natural Sciences, Gütersloh, 2007, 64 Seiten, ISBN 978-3-939589-66-2, ISSN 1862-7188