Radii of starlikeness of some special functions
  Geometric properties of the classical Lommel and Struve functions, both of the first kind, are studied. For each of them, there different normalizations are applied in such a way that the resulting functions are analytic in the unit disc of the complex plane. For each of the six functions we determine the radius of starlikeness precisely. 
\'Arp\'ad Baricz, Dimitar K. Dimitrov, Halit Orhan, Nihat Yagmur
math.CA