Ellington, A. D. & Szostak, J. W. Nature 346, 818–822 (1990).
Blackwell, T. K. & Weintraub, H. Science 250, 1104–1110 (1990).
Blackwell, T. K. & Weintraub, H. Science 250, 1149–1152 (1990).
Kinzler, K. W. & Vogelstein, B. Nucleic Acids Res. 17, 3645–3653 (1989).
Thiesen, H. J. & Bach, C. Nucleic Acids Res. 18, 3203–3208 (1990).
Kinzler, K. W. & Vogelstein, B. Molec cell. Biol. 10, 634–642 (1990).
Chittenden, T., Livingston, D. M. & Kaelin, W. G. Jr Cell 65, 1073–1082 (1991).
Joyce, G. F. Gene 82, 83–87 (1989).
Robertson, D. L. & Joyce G. F. Nature 344, 467–468 (1990).
Green, R., Ellington, A. D. & Szostak, J. W. Nature 347, 467–468 (1990).
Tuerk, C. & Gold, L. Science 249, 505–510 (1990).
Hultman, T., Stahl, S., Moks, T. & Uhlén, M. Nucleosides and Nucleotides 7, 629–638 (1988).
Fenton, J. W. Semin. Thromb. Hemostat. 14, 234–240 (1987).
Bode, W. et al. EMBO J. 8, 3467–3475 (1989).
Rydel, T. J. et al. Science 249, 277–280 (1990).