TY - JOUR AU - Stefan BaraƄczuk TI - Height Functions for Groups of $S$-units of Number Fields and Reductions Modulo Prime Ideals JO - Bulletin of the Polish Academy of Sciences. Mathematics PY - 2015 SP - 25 EP - 31 VL - 63 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/ba63-1-4/ DO - 10.4064/ba63-1-4 LA - en ID - 10_4064_ba63_1_4 ER -