1. Xiang L, Cheng S (2005) J Anal Chem 60:1073. doi: 10.1007/s10809-005-0241-4
2. Evelyne S, Catherine HM, Seng TC, Anthony CEG, Philip BN (2002) Electroanal Chem 538:253. doi: 10.1016/S0022-0728(02)00833-1
3. Haiyan W, Shaolin M (1999) Sens Actuators B Chem 56(1–2):22. doi: 10.1016/S0925-4005(99)00025-8
4. Jinqing K, Huaiguo X, Shaolin M, Hong C (1997) Synth Met 87(3):205. doi: 10.1016/S0379-6779(97)80110-5
5. Suman S, Pratima SR, Pandey MK, Malhotra BD (2006) Anal Chim Acta 568(1–2):126. doi: 10.1016/j.aca.2005.10.008