Jepa Malar, A. and Sankaranarayana Pillai, M. 2010. Synthesis and Characterization of Schiff Base Complexes of Molybdenum(VI), Tungsten(VI) and Chromium(III) with Vanillin and Aspartic Acid. Asian Journal of Chemistry. 22, 7 (Jun. 2010), 5551–5554.