%0 Journal Article %T Evaluation of the Electrostatic Contribution to the Retention of Modified Nucleosides and Nucleobases by Zwitterionic Hydrophilic Interaction Chromatography %A Diego Garc¨ªa-G¨®mez %A Encarnaci¨®n Rodr¨ªguez-Gonzalo %A Rita Carabias-Mart¨ªnez %J ISRN Analytical Chemistry %D 2012 %I Hindawi Publishing Corporation %R 10.5402/2012/308062 %U http://dx.doi.org/10.5402/2012/308062