Aziz-Ur-Rehman; Tahir, Saif-Ur-Rehman; Abbasi, Muhammad Athar; Rasool, Shahid; Siddiqa, Asia; Awais-Ur-Rehman; Muhammad, Ali; Sharif, Ahsan
Asian Journal of Chemistry, 2013 , vol. 25, # 16 p. 9000 - 9004