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Chado, G. R., Holland, E. N., Tice, A. K., Stoykovich, M. P., & Kaar, J. L. (2018). Modification of Lipase with Poly(4-acryloylmorpholine) Enhances Solubility and Transesterification Activity in Anhydrous Ionic Liquids. Biomacromolecules, 19(4), 1324–1332. doi:10.1021/acs.biomac.8b00176 
10.1021/acs.biomac.8b00176