“…Fractional differential equations have numerous applications in physics, engineering and biology. There is a number of monographs (Atanackovic et al, 2014;Baleanu et al, 2012;Hilfer, 2000;Kilbas et al, 2006;Klimek, 2009;Leszczynski, 2011;Magin, 2006;Malinowska and Torres, 2012;Podlubny, 1999) and a huge number of papers (Agrawal, 2002;Ciesielski and Leszczynski, 2006;Katsikadelis, 2012;Klimek, 2001; Riewe, 1996;Sumelka, 2014;Sumelka and Blaszczyk, 2014;Zhang et al, 2014) that cover various problems in fractional calculus. The list is large and is growing rapidly.…”