%0 Journal Article %T On existence of solution to some nonlinear differential equations of fractional order 2 < alpha leq 3 %A M. M. Matar %J International Journal of Mathematical Analysis %D 2012 %I %U http://www.m-hikari.com/ijma/ijma-2012/ijma-33-36-2012/matarIJMA33-36-2012-2.pdf