L. Schmidt, S. Düsselmann, C. Schlick, O. Tegel, and H. Luczak. Proceedings of the 6th International Design Conference (Dubrovnik 2000), page 44–48. Zagreb, CTT, Fakultet strojarstva brodogradnje Sveucilista, (2000)
L. Schmidt, and H. Luczak. Proceedings of the 6th International Conference on Work With Display Units (Berchtesgaden 2002), page 208–210. Berlin, Ergonomic Institut für Arbeits- und Sozialforschung Forschungsgesellschaft mbH, (2002)