Ahmad, A. L., P. C. Oh, and S. R. Abd. Shukor. “Biocatalytic Synthesis of Angiotensin–converting Enzyme (ACE) Inhibitor Drug Precursors Using Membrane Bioreactor: A Review”. Journal of Applied Membrane Science &Amp; Technology, vol. 9, no. 1, Nov. 2017, doi:10.11113/amst.v9i1.65.