Sayers, Jon R. (1994). "Computer Aided Identification of a Potential 5′-3′ Exonuclease Gene Encoded by Escherichia coli". Journal of Theoretical Biology170 (4): 415–21. PMID7996866. doi:10.1006/jtbi.1994.1202.
Ceska, T. A.; Sayers, J. R.; Stier, G.; Suck, D. (1996). "A helical arch allowing single-stranded DNA to thread through T5 5'-exonuclease". Nature382 (6586): 90–3. PMID8657312. doi:10.1038/382090a0.
Sayers, Jon R. (1994). "Computer Aided Identification of a Potential 5′-3′ Exonuclease Gene Encoded by Escherichia coli". Journal of Theoretical Biology170 (4): 415–21. PMID7996866. doi:10.1006/jtbi.1994.1202.
Ceska, T. A.; Sayers, J. R.; Stier, G.; Suck, D. (1996). "A helical arch allowing single-stranded DNA to thread through T5 5'-exonuclease". Nature382 (6586): 90–3. PMID8657312. doi:10.1038/382090a0.