TY - CONF T1 - PYHASSE a New Software Tool for Partially Ordered Sets Example: Ranking of Contaminated Regions in the Alps TI - Environmental Informatics and Industrial Ecology AU - Voigt, Kristina AU - Br├╝ggmann, Rainer AU - Schramm, Karl-Werner AU - Kirchner, Manfred PY - 2008/// SN - 978-3-8322-7313-2 PB - Shaker Verlag SP - 631 EP - 636 ER -