“…The fractional order differential equations have been much studied and many aspects of these equations are explored. For some recent work on fractional diffusion equations, we can refer to different publications (see for instance, Loghmani (2013, 2014), Tadjeran (2004, 2006), Dehghan (2007, 2006), Sweilam and Khader (2010), Sweilam et al (2011Sweilam et al ( , 2012Sweilam et al ( , 2015) and the references therein.…”