Cauchy fractional derivative
U. Kaya

References
1.	R.K. Raina, C.L. Koul, “On Weyl Fractional Calculus”, Proc. Amer. Math. Soc., 73:2 (1979), 188–192
2.	L. Debnath, D. Bhatta, Integral Transforms and Their Applications, CRC press, Boca Raton, 2014, 818 pp.
3.	V.L. Ahlfors, Complex Analysis, McGraw-Hill Inc., New York, 1979, 336 pp.