Torsion Free Subgroups of Fuchsian Groups and Tessalations of Surfaces. A.L. Edmonds; J.H. Ewing; R. Kulkarni — 1982 Inventiones mathematicae
On a Subfamily of P-valent Functions With Negative Coefficients S. R. Kulkarni; M. K. Aouf; S. B. Joshi — 1994 Matematički Vesnik
A class of multivalent harmonic functions involving a generalized Ruscheweyh type operator Waggas Galib Atshan; S. R. Kulkarni; R. K. Raina — 2008 Matematički Vesnik