%0 Journal Article %T On Type of Periodicity and Ergodicity to a Class of Fractional Order Differential Equations %A Agarwal RaviP %A Andrade Brunode %A Cuevas Claudio %J Advances in Difference Equations %D 2010 %I Springer %X We study several types of periodicity to a class of fractional order differential equations. %U http://www.advancesindifferenceequations.com/content/2010/179750