%0 Journal Article %T Theory of fractional hybrid differential equations with linear perturbations of second type %A Hongling Lu %A Shurong Sun %A Dianwu Yang and Houshan Teng %J Boundary Value Problems %D 2013 %I %R 10.1186/1687-2770-2013-23 %X MSC: 34A40, 34A12, 34A99. %K fractional differential inequalities %K existence theorem %K comparison principle %U http://www.boundaryvalueproblems.com/content/2013/1/23/abstract