Citation: Ma, Yu; Wen, Yan-Qing; Zhang, Jian-Yong; Gao, En-Qing; Liu, Cai-Ming (2010). Structures and magnetism of azide- and carboxylate-bridged metal(II) systems derived from 1,2-bis(N-carboxymethyl-4-pyridinio)ethane.. Dalton transactions (Cambridge, England : 2003), 39, pp. 1846-1854.