^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^Ni J, Fernandez MA, Danielsson L, Chillakuru RA, Zhang J, Grubb A, Su J, Gentz R, Abrahamson M (Oct 1998). "Cystatin F is a glycosylated human low molecular weight cysteine proteinase inhibitor". J Biol Chem. 273 (38): 24797–804. doi:10.1074/jbc.273.38.24797. PMID9733783.{{cite journal}}: CS1 maint: unflagged free DOI (link)
^Halfon S, Ford J, Foster J, Dowling L, Lucian L, Sterling M, Xu Y, Weiss M, Ikeda M, Liggett D, Helms A, Caux C, Lebecque S, Hannum C, Menon S, McClanahan T, Gorman D, Zurawski G (Aug 1998). "Leukocystatin, a new Class II cystatin expressed selectively by hematopoietic cells". J Biol Chem. 273 (26): 16400–8. doi:10.1074/jbc.273.26.16400. PMID9632704.{{cite journal}}: CS1 maint: unflagged free DOI (link)