%0 Journal Article %T On the Stability of a Generalized Quadratic and Quartic Type Functional Equation in Quasi-Banach Spaces %A Gordji MEshaghi %A Abbaszadeh S %A Park Choonkil %J Journal of Inequalities and Applications %D 2009 %I Springer %X We establish the general solution of the functional equation for fixed integers with and investigate the generalized Hyers-Ulam stability of this equation in quasi-Banach spaces. %U http://www.journalofinequalitiesandapplications.com/content/2009/153084