TY - JOUR AU - Krzysztof Jan Nowak TI - A proof of the valuation property and preparation theorem JO - Annales Polonici Mathematici PY - 2007 SP - 75 EP - 85 VL - 92 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/ap92-1-8/ DO - 10.4064/ap92-1-8 LA - en ID - 10_4064_ap92_1_8 ER -