Barker et.al.,1978
Barker W.C.L., Ketcham K., Dayhoff M.O., Duplications in protein sequences. pp.359-362. In: M.O.Dayhoff (ed.), 1978, Atlas of Protein Sequence and Structure, Vol.5, Supplement 3. Natl.Biomed.Res. Found., Silver Spring, MD.
Barker W.C.L., Ketcham K., Dayhoff M.O., Duplications in protein sequences. pp.359-362. In: M.O.Dayhoff (ed.), 1978, Atlas of Protein Sequence and Structure, Vol.5, Supplement 3. Natl.Biomed.Res. Found., Silver Spring, MD.