Iyire, A., C. Russell, T. Dennison, R. Rajoli, I. Saleem, A. Rahman, and A. Mohammed. “Development, Optimisation, Validation and Inter-Laboratory Verification of a Reversed Phase HPLC Method for Quantification of Human Recombinant Insulin”. JOURNAL OF ADVANCES IN BIOTECHNOLOGY, vol. 7, Mar. 2018, pp. 984-98, doi:10.24297/jbt.v7i1.7192.