Martinez Cristancho, C., David, F., Franco-Lara, E., & Seidel-Morgenstern, A. (2013). Discontinuous and continuous purification of single-chain antibody fragments using immobilized metal ion affinity chromatography. Journal of Biotechnology, 163(2), 233-242. doi:10.1016/j.jbiotec.2012.08.022.