@article{NSJOM_2002_32_2a_2,
     author = {M. A. 

 Khan and M. Najmi},
     title = {On convex 

 operator for (p,q)-analytic functions},
     journal = {Novi Sad Journal of Mathematics},
     pages = {13-21},
     year = {2002},
     volume = {32},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2002_32_2a_2/}
}