%0 Journal Article %A Nikolitsa Chatzigiannakidou %T Approximation properties of doubly overconvergent power series %J Annales Polonici Mathematici %D 2017 %P 197-207 %V 120 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap170523-20-11/ %R 10.4064/ap170523-20-11 %G en %F 10_4064_ap170523_20_11