1. Beal, P. A. and Dervan, P. B. (1991). Second structural motif for recognition of DNA by oligonucleotide-directed triple-helix formation. Science 251, 1360–1363.
2. Hélène, C. (1991). The anti-gene strategy: control of gene expression by triplex-forming-oligonucleotides. Anticancer Drug Des. 6, 569–584.
3. Thuong, N.T. and Hélène, C. (1993). Sequence-specific recognition and modification of double-helical DNA by oligonucleotides. Angew. Chem. Int. Ed. Engl. 32, 666–690.
4. Nielsen, P. E., Egholm, M., Berg, R. H. and Buchardt, O. (1991). Sequence selective recognition of DNA by strand displacement with a thymine-substituted polyamide. Science 254, 1497–1500.
5. Nielsen, P. E., Egholm, M. and Burchardt, O. (1994). Peptide nucleic acid (PNA). A DNA mimic with a peptide backbone. Bioconjugate Chem. 5, 3–7.