Niu, J. ., Zhou, T. ., Niu, L. ., Xie, Z. ., Fang, F. ., Yang, F. ., & Wu, Z. . (2018). Simultaneous pre-concentration and separation on simple paper-based analytical device for protein analysis. Analytical and Bioanalytical Chemistry. https://doi.org/10.1007/s00216-017-0809-5 (Original work published 2018)

Xie, S. ., Gao, H. ., Niu, L. ., Xie, Z. ., Fang, F. ., Wu, Z. ., & Yang, F. . (2018). Carrier-Ampholyte-free Isoelectric Focusing on a Paper-based Analytical Device for the Fractionation of Proteins. Journal of Separation Science. https://doi.org/10.1002/jssc.201701438 (Original work published 2018)