Affiliation: | Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi-23640, District Swabi, NWFP, Pakistan;Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi-23640, District Swabi, NWFP, Pakistan;Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi-23640, District Swabi, NWFP, Pakistan; Physical Technical Institute of Academy of Sciences, Rudaki Ave. 33, Dushanbe, 734025, Tajikistan |