Humaira Seema; S. K. Durrani; K. Saeed; I. Mohammadzai; N. Hussain(Peshawar: Materials Research Laboratory Department of Physics University of Peshawar, Pakistan, 2010-12-02)
Falak Niaz; Khan, Muhammad Riaz; Ihsan-ul-Haque(Peshawar: Materials Research Laboratory Department of Physics University of Peshawar, Pakistan, 2010-01-04)