D. Kundisch and C. Klein, “Der Tracking Error von indexnachbildenden Instrumenten auf den DAX - eine empirische Analyse des ETFs DAX EX sowie zehn Indexzertifikaten,” Der Betrieb, vol. 62, no. 22, pp. 1141–1145, 2009.

F. Hellmich and S. Wernke, Eds.,  Lernstrategien im Grundschulalter. Konzepte, Befunde und praktische Implikationen. Stuttgart: Kohlhammer, 2009.

J. Höntges, F. Günther, and F. Hellmich, “Diagnose mathematischer Basiskompetenzen im Kindergarten,” in Beiträge zum Mathematikunterricht 2009, M. Neubrand , Ed. Hildesheim: Franzbecker, 2009, pp. 387–390.

F. Hellmich and J. Läsche, “Lesestrategien und Lesekompetenzen bei Kindern am Ende der Grundschulzeit,” in Europäisierung der Bildung. Konsequenzen und Herausforderungen für die Grundschulpädagogik, C. Röhner, C. Henrichwark, and M. Hopf, Eds. Wiesbaden: VS Verlag für Sozialwissenschaften, 2009, pp. 171–175.

F. Hellmich, “Mathematische Basiskompetenzen im Vorschulalter erkennen und deuten,” MNU-PRIMAr, vol. 1, pp. 84–88, 2009.

S. Wernke and F. Hellmich, “Was sind Lernstrategien ... und warum sind sie wichtig?,” in Lernstrategien im Grundschulalter. Konzepte, Befunde und praktische Implikationen, S. Wernke and F. Hellmich, Eds. Stuttgart: Kohlhammer, 2009, pp. 13–24.

F. Hellmich and J. Höntges, “Möglichkeiten der Erfassung von Lesestrategien im Leseunterricht der Grundschule,” in Lernstrategien im Grundschulalter. Konzepte, Befunde und praktische Implikationen, F. Hellmich and S. Wernke, Eds. Stuttgart: Kohlhammer, 2009, pp. 61–70.

L. Shi, S. A. Wudy, A. Buyken, M. F. Hartmann, and T. Remer, “Body fat and animal protein intakes are associated with adrenal androgen secretion in children,”10.3945/ajcn.2009.27964__The American Journal of Clinical Nutrition, pp. 1321–1328, 2009, doi:10.3945/ajcn.2009.27964 .

N. Karaolis-Danckert, A. Buyken, A. Sonntag, and A. Kroke, “Birth and early life influences on the timing of puberty onset: results from the DONALD (DOrtmund Nutritional and Anthropometric Longitudinally Designed) Study,”10.3945/ajcn.2009.28259__The American Journal of Clinical Nutrition, pp. 1559–1565, 2009, doi:10.3945/ajcn.2009.28259 .

G. Cheng et al., “Diet Quality in Childhood Is Prospectively Associated with the Timing of Puberty but Not with Body Composition at Puberty Onset,”10.3945/jn.109.113365__The Journal of Nutrition, pp. 95–102, 2009, doi:10.3945/jn.109.113365 .

A. L. B. Gunther, N. Karaolis-Danckert, A. Kroke, T. Remer, and A. Buyken, “Dietary Protein Intake throughout Childhood Is Associated with the Timing of Puberty,”10.3945/jn.109.114934__The Journal of Nutrition, pp. 565–571, 2009, doi:10.3945/jn.109.114934 .

H. Wehrheim and D. Wonisch, “Compositional CSP Traces Refinement Checking,” Electr. Notes Theor. Comput. Sci., no. 2, pp. 135--151, 2009.

T. Ruhroth and H. Wehrheim, “Static Class Elements for Object-Z,” Electr. Notes Theor. Comput. Sci., pp. 193--205, 2009.

T. Ruhroth, H. Voigt, and H. Wehrheim, “Measure, Diagnose, Refactor: A Formal Quality Cycle for Software Models,” in 35th Euromicro Conference on Software Engineering and Advanced Applications, SEAA 2009, Patras, Greece, August 27-29, 2009, Proceedings, 2009, pp. 360--367.

M. Leuschel and H. Wehrheim, Eds., Integrated Formal Methods, 7th International Conference, IFM 2009, D\'22usseldorf, Germany, February 16-19, 2009. Proceedings. 2009.

J. Becker et al., “Productivity management for customer solutions --- Towards a performance management system for efficient service value networks,” in 29th International RESER Conference, Budapest, Hungary, 2009.

J. Becker, D. Beverungen, R. Knackstedt, and M. Matzner, “Configurative Service Engineering --- A Rule-Based Configuration Approach for Versatile Service Processes in Corrective Maintenance,” in Proceedings of the 42th Hawaii International Conference on System Sciences, Waikoloa, HI, USA, 2009.

J. Becker, D. Beverungen, R. Knackstedt, M. Matzner, O. Müller, and J. Pöppelbuß, “A Framework for Design Research in the Service Science Discipline,” in Americas Conference on Information Systems, San Francisco, USA, 2009.

J. Becker, D. Beverungen, M. Matzner, and O. Müller, “Design Requirements to Support Information Flows for Providing Customer Solutions: A Case Study in the Mechanical Engineering Sector,” in Proceedings of the First International Symposium on Services Science (ISSS’09), 2009, pp. 75--85.

J. Becker, D. Beverungen, R. Knackstedt, and O. Müller, “Model-Based Decision Support for the Customer-Specific Configuration of Value Bundles,” Enterprise Modelling and Information Systems Architectures, no. 1, pp. 26--38, 2009.