1. 1,1′-Di(hydrazinocarbonylmethyl)-2,2′-biimidazole monohydrate and 1,1′-di[2-(hydrazinocarbonyl)ethyl]-2,2′-biimidazole
2. Higashi, T. (1995). ABSCOR. Rigaku Corporation, Tokyo, Japan.
3. Liang, H., Zhang, T., Chen, B., Xiang, J., Shen, H. & Xie, X. (2009). Unpublished results.
4. Rigaku (1998). RAPID-AUTO. Rigaku Corporation, Tokyo, Japan.