[22] Preparation and specificity of dipeptidyl aminopeptidase I.

@article{McDonald197222PA,
  title={[22] Preparation and specificity of dipeptidyl aminopeptidase I.},
  author={J Ken McDonald and Phyllis Callahan and S Ellis},
  journal={Methods in enzymology},
  year={1972},
  volume={25},
  pages={272-81}
}