Ming Chen, X.- ’, and N. Seik Weng. “Crystal Structure of lu,[i’-bis(trimethylammonio)bis[tetra-ix¬trimethylammonio(aquacopper)(triaquaneodynium)] Decaperchlorate Dihydrate at -50°C”. Malaysian Journal of Science, vol. 18, no. 1, Apr. 1999, pp. 67-72, https://juku.um.edu.my/index.php/MJS/article/view/9392.