Phuong, N. D., N. Tuteja, L. H. Ham, and P. X. Hoi. “Expression and Purification of Recombinant Protein NLI-IF from Escherichia Coli”. Academia Journal of Biology, vol. 34, no. 3, Oct. 2012, pp. 347-53, doi:10.15625/0866-7160/v34n3.2468.