%0 Journal Article %A M. Takeuchi %T An effective lower bound for a certain exponential function %J Acta Arithmetica %D 1983 %P 333-348 %V 43 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-43-4-333-348/ %R 10.4064/aa-43-4-333-348 %G en %F 10_4064_aa_43_4_333_348