N. Raman, A. Sakthivel and R. Jeyamurugan
Journal of Coordination Chemistry 62 ( 24 ): 3969 - 3985 , 2009
N. Raman, R. Jeyamurugan, R. Usha Rani, T. Baskaran and L. Mitu
Journal of Coordination Chemistry 63 ( 9 ): 1629 - 1644 , 2010