Khan, Khalid Mohammed; Rani, Mubeen; Ambreen, Nida; Ejaz, Asma; Perveen, Shahnaz; Haider, Syed Moazzam; Choudhary, Mohammad Iqbal; Voelter, Wolfgang Letters in Drug Design and Discovery, 2012 , vol. 9, # 2 p. 135 - 139