(1)
Rai, B.; Choudhary, P. Synthesis and Characterization of Transition Metal Complexes of 2-(p-Chlorophenyl)-4,5-Dimethyl (8H) Pyrimido [4,5-D] Pyrimidine Semicarbazone and Thiosemicarbazone . ajc 2010, 14, 312-318.