Michael Meyer Alexandre Hocquet Jürgen Sühnel Interaction of sodium and potassium ions with sandwiched cytosine-, guanine-, thymine-, and uracil-base tetrads. 352-364 2005 26 Journal of Computational Chemistry 4 http://dx.doi.org/10.1002/jcc.20176 db/journals/jcc/jcc26.html#MeyerHS05