Citation: Wang, Xiuli; Hu, Hailiang; Liu, Guocheng; Lin, Hongyan; Tian, Aixiang (2010). Self-assembly of nanometre-scale metallacalix[4]arene building blocks and Keggin units to a novel (3,4)-connected 3D self-penetrating framework.. Chemical communications (Cambridge, England), 46, pp. 6485-6487.