K. Reiss, F. Hellmich, and M. Reiss, “Reasoning and proof in geometry: Prerequisites of knowledge acquisition in secondary school students,” in Proceedings of the 26th Conference of the International Group for the Psychology of Mathematics Education, A. D. Cockburn and E. Nardi, Eds. Norwich:  University of East Anglia, 2002, pp. 113–120.

H. Wehrheim, “Checking Behavioural Subtypes via Refinement,” in Formal Methods for Open Object-Based Distributed Systems V, IFIP T/W.1 Fifth International Conference on Formal Methods for Open Object-Based Distributed Systems (FMOODS 2002), March 20-22, 2002, Enschede, The Netherlands, 2002, pp. 79--93.

M. Ziegler, V. Damerow, and L. Finschi, “Point Location Algorithms of Minimum Size,” in Proceedings of the 14th Canadian Conference on Computational Geometry (CCCG’02), 2002.

S. Krauter, “Use of PV Systems for Carbon Dioxide Reduction – a comparison of on- and off-grid systems in Brazil and Germany,” in Proceedings of the World Renewable Energy Congress VII, Köln (Deutschland), 29. Juni – 5. Juli 2002, (Buch mit CD) Pergamon Press, 2002.

S. Krauter, “Eletrificação rural através de sistemas fotovoltaicos autônomos: básicos, atividades no Brasil, aplicações, novos desenvolvimentos. (Ländliche Elektrifizierung mittels PV Systemen: Grundlagen, Beispiele, Aktivitäten in Brasilien, neue Entwicklungen),” in  Proceedings of 2<sup>o</sup> Fórum Energia Limpa, Rio de Janeiro (Brasilien), 29.–30. Juli 2002, 2002.

S. Krauter, “Eletrificação rural através de sistemas fotovoltaicos: básicos, atividades no Brasil, aplicações, desenvolvimentos atuais,” in 3<sup>o</sup> Seminário Energia na Agricultura, Uberaba–MG (Brasilien). 27.–29. November 2002, S. III-1–9, 2002.

S. Krauter and F. Ochs, “Sistema Solar Fotovoltaico Híbrido Integrado,” in 3<sup>o</sup> Seminário Energia na Agricultura. Uberaba/MG (Brasilien). 27.–29. November 2002, S. III-10–17, 2002.

D. Reuter, C. Meier, C. Riedesel, and A. D. Wieck, “Local two-dimensional electron gas formation in p-doped GaAs/InyG yAs/AlxG xAs heterostructures by focused Si-implantation doping,” Semiconductor Science and Technology, vol. 17, no. 6, pp. 585–589, 2002.

M. Rahm et al., “Planar Hall sensors for micro-Hall magnetometry,” Journal of Applied Physics, vol. 91, no. 10, p. 7980, 2002.

S. F. Fischer, G. Apetrii, S. Skaberna, U. Kunze, D. Reuter, and A. D. Wieck, “Control of the confining potential in ballistic constrictions using a persistent charging effect,” Applied Physics Letters, pp. 2779–2781, 2002.

C. Fühner, U. F. Keyser, R. J. Haug, D. Reuter, and A. D. Wieck, “Flux-quantum-modulated Kondo conductance in a multielectron quantum dot,” Physical Review B, 2002.

D. Kähler, U. Kunze, D. Reuter, and A. D. Wieck, “Quantum wire fabrication from compensating-layer GaAs–AlGaAs heterostructures,” Microelectronic Engineering, pp. 619–623, 2002.

C. Naud et al., “Aharonov–Bohm cages in the GaAlAs/GaAs system,” Physica E: Low-dimensional Systems and Nanostructures, pp. 190–196, 2002.

J. Regul et al., “Fabrication of quantum point contacts by engraving GaAs/AlGaAs heterostructures with a diamond tip,” Applied Physics Letters, pp. 2023–2025, 2002.

M. R. Schaapman, P. C. M. Christianen, J. C. Maan, D. Reuter, and A. D. Wieck, “A multipurpose torsional magnetometer with optical detection,” Applied Physics Letters, pp. 1041–1043, 2002.

D. Reuter, C. Meier, M. A. S. Álvarez, and A. D. Wieck, “Increased thermal budget for selectively doped heterostructures by employing AlAs/GaAs superlattices,” Applied Physics Letters, pp. 377–379, 2002.

D. Reuter, D. Kähler, U. Kunze, and A. D. Wieck, “Layer-compensated selectively doped AlxG-xAs/GaAs heterostructures as a base material for nanolithography,” Semiconductor Science and Technology, pp. 603–607, 2002.

D. Reuter, M. Versen, M. D. Schneider, and A. D. Wieck, “Increased mobility anisotropy in selectively doped AlxGxAs/GaAs heterostructures with high electron densities,” Journal of Applied Physics, pp. 321–325, 2002.

D. Reuter, D. Kähler, U. Kunze, and A. D. Wieck, “Layer-compensated selectively doped AlxG-xAs/GaAs heterostructures as a base material for nanolithography,” Semiconductor Science and Technology, pp. 603–607, 2002.

M. E. Gershenson, Y. B. Khavin, D. Reuter, P. Schafmeister, and A. D. Wieck, “Hot-Electron Effects in Two-Dimensional Hopping with a Large Localization Length,” Physical Review Letters, pp. 1718–1721, 2002.