%0 Journal Article %T New bounds for Szemerédi's theorem, I: progressions of length 4 in finite field geometries %A Green, Ben %A Tao, Terence %J Proceedings of the London Mathematical Society %V 98 %N 2 %P 365-392 %@ 0024-6115 %D 2009-03-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve