1. Andrus, A., Efcavitch, W., McBride, L. J. and Giusti, B. (1988). Tetrahedron Lett., 29, 861
2. Applied Biosystems User Bulletin No. 13, Revised 1 April 1987, Applied Biosystems Inc., Foster City, Cal.
3. Beaucage, S. L. and Caruthers, M. H. (1981). Tetrahedron Lett., 22, 1859
4. Bradbury, E. and Nagyvary, J. (1976). Nucl. Acids Res., 3, 2437
5. Brennan, C. A., Van Cleve, M. D. and Gumport, R. I. (1986). J. Biol. Chem., 261, 7270