M. Ahmad, I. Md Isa, B. L. Shaw, and S. D. Perera, “Syntheses and Characterization of the Complexes of Molybdenum, Tungsten and Palladium with 2-diacetylpyridine- (1R)-(-)-fenchone azine”, JSML, vol. 2, no. 1, pp. 56–66, Jun. 2010.