Punam Bedi and Vibha Gaur
Information Technology Journal 6 ( 3 ): 414 - 423 , 2007
Punam Bedi and Suruchi Chawla
Information Technology Journal 6 ( 4 ): 584 - 588 , 2007
Information Technology Journal 6 ( 5 ): 690 - 696 , 2007