1. Allison, S. A., Shibata, J. H., Wilcoxon, J., and Schurr, J. M., 1982, Biopolymers 21:729.
2. Atkinson, T, and Smith, M., 1984, Solid-phase synthesis of oligodeoxyribonucleotides by the phosphite-triester method, in Oligonucleotide Synthesis, a Practical Approach (M. J. Gait, ed.) (IRL, Oxford, UK), p. 35.
3. Aurich, H. G., 1989, Nitroxides, in Nitrones, Nitronates, and Nitroxides (E. Breuer, H. G. Aurich, and A. Nielsen, eds.) (Wiley, New York), p. 313.
4. Billeter, M., Qian, Y. Q., Otting, G., Müller, M., Gehring, W., and Wüthrich, K., 1993, J. Mol. Biol. 234:1084.
5. Bobst, A. M., and Torrence, P. F., 1978, Polymer 19:115.