1. Abdul Nasir Jamal:
Department of Statistics, The Islamia University of Bahawalpur, Bahawalpur, PAKISTAN
2. Munir Akthar:
Department of Statistics, The Islamia University of Bahawalpur, Bahawalpur, PAKISTAN
3. M. H. Tahir:
Department of Statistics, The Islamia University of Bahawalpur, Bahawalpur, PAKISTAN