1. Data analyses with the WebGIS WaldIS;European Journal of Forest Research,2010
2. Aden, C, Schmidt, G and Schröder, W. 2007b. A web-based geo-information system for the monitoring of genetically modified organisms. E-Journal of Informatics in Agriculture 2. http://www.ezai.org/index.php/eZAI/article/view/26/26.