Rai, B. and Singh, S. 2010. Synthesis, Spectral Characterization and Antimicrobial Studies of 2,3,4,5- Tetrahydroindeno-[1,2-d]-thiazolo-[3,2-a]-pyrimidine-10(H)semicarbazone Complexes of Co(II), Ni(II) and Cu(II)¶. Asian Journal of Chemistry. 22, 7 (Jun. 2010), 5619–5624.