R.K. Dubey, P. Baranwal, S.K. Dwivedi and U.N. Tripathi
Journal of Coordination Chemistry 64 ( 15 ): 2649 - 2657 , 2011
U.N. Tripathi, Neetu Srivastava, Mohd. Safi Ahmed, A. Siddiqui and Shashank K. Dwivedi
Journal of Coordination Chemistry 64 ( 22 ): 3938 - 3949 , 2011