TY - SER AU - Tsonev,Latchezar I. AU - Hirsh,Allen G. TI - Theory and applications of a novel ion exchange chromatographic technology using controlled pH gradients for separating proteins on anionic and cationic stationary phases N1 - YA2008 M11 D01 Sources - Journal of Chromatography A Sources - 1200 (2) 2008 : 166-182 ISSN - 0021-9673 ER -