Jiang, L. et al. 2014. A Novel Mutually Perpendicular Bicyclo-Shape Tetranuclear Complex Constructed from 2,3-Dihydroxy butanedioic Acid with Pisces Mode. Asian Journal of Chemistry. 26, 9 (Apr. 2014), 2667–2670. DOI:https://doi.org/10.14233/ajchem.2014.15791.