Hu, Shuzhen; Guo, Yong; Xu, Jian; Shao, Shijun
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 2009 , vol. 72, # 5 p. 1043 - 1046

Guirguis, Dalal B.
Egyptian Journal of Chemistry, 1999 , vol. 42, # 1 p. 91 - 97

Saeed, Sohail; Hussain, Rizwan; Ali, Muhammad
Journal of Heterocyclic Chemistry, 2013 , vol. 50, # 2 p. 237 - 243