1. Miller C (2006) Nature 440:484
2. Pusch M (2010) In: Kew J, Davies C (eds) Ion channels from structure and function. Oxford University Press, New York, p 172, references therein
3. Dutzler R, Campbell EB, Cadene M, Chait BT, MacKinnon R (2002) Nature 415:287
4. Bianchi A, Bowman-James K, García-España E (eds) (1997) Supramolecular chemistry of anions. Wiley-VCH, New York
5. Singh RP, Moyer BA (eds) (2004) Fundamentals and applications of anion separations. Kluwer Academic/Plenum, New York