%0 Journal Article %A Gautami Bhowmik %A Jan-Christoph Schlage-Puchta %T An improvement on Olson's constant for $\mathbb Z_p\oplus \mathbb Z_p$ %J Acta Arithmetica %D 2010 %P 311-319 %V 141 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa141-4-1/ %R 10.4064/aa141-4-1 %G en %F 10_4064_aa141_4_1