^Harper, J.W., Cook, R.R., Roberts, C.J., McLaughlin, B.J. and Powers, J.C. (1984). „Active site mapping of the serine proteases human leukocyte elastase, cathepsin G, porcine pancreatic elastase, rat mast cell proteases I and II, bovine chymotrypsin Aα, and Staphylococcus aureus' protease V-8 using tripeptide thiobenzyl ester substrates”. Biochemistry. 23: 2995—3002. PMID6380580.CS1 одржавање: Вишеструка имена: списак аутора (веза)
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^Bode, W., Meyer, E., Jr. and Powers, J.C. (1989). „Human leukocyte and porcine pancreatic elastase: X-ray crystal structures, mechanism, substrate specificity, and mechanism-based inhibitors”. Biochemistry. 28: 1951—1963. PMID2655701.CS1 одржавање: Вишеструка имена: списак аутора (веза)