%0 Journal Article %A Charles L. Samuels %T Estimating heights using auxiliary functions %J Acta Arithmetica %D 2009 %P 241-251 %V 137 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa137-3-5/ %R 10.4064/aa137-3-5 %G en %F 10_4064_aa137_3_5