%0 Journal Article %T Swing Lattice Game and a direct proof of the Swing Lemma for planar semimodular lattices %A Czédli, Gábor %A Makay, Géza %J Acta Scientiarum Mathematicarum %V 83 %N 1-2 %P 13-29 %@ 0001-6969 %D 2017-06-01 %I Springer International Publishing %~ DeepDyve