1. Purification of ginger protease;Ichikawa;J. Jpn. Soc. Food Nutr.,1973
2. Ginger rhizome: a new source of proteolytic enzyme;Thompson;J. Food Sci.,1973
3. Proteinase and collagenase activities in ginger rhizome;Hashimoto;J. Jpn. Soc. Nutr. Food Sci.,1991
4. Choi, K.H. (1998). Structure and unusual specificity of cysteine proteases from ginger rhizome, Zingiber officinale. Ph.D. Thesis, Boston University.
5. Amino-acid sequence and glycan structure of cysteine proteases with proline specificity from ginger rhizome, Zingiber officinale;Choi;Eur. J. Biochem.,2000