%0 Journal Article %T Robust Performance and Observer Based Control for Periodic Discrete-Time Uncertain Systems %A Keles, Natália A. %A Lacerda, Márcio J. %A Agulhari, Cristiano M. %J Mathematical Problems in Engineering %V 2019 %P 9 %@ 1024-123X %D 2019-02-11 %I Hindawi %~ DeepDyve