Turner, R.T., Loy, J.A., Nguyen, C., Devasamudram, T., Ghosh, A.K., Koelsch, G. and Tang, J. (2002). ā€˛Specificity of memapsin 1 and its implications on the design of memapsin 2 (β-secretase) inhibitor selectivityā€¯. Biochemistry41: 8742-8746. PMID12093293.