1. Steitz, J. A. et al. in Structure and Function of Major and Minor snRNPs (ed. Birnsteil, M. L.) 115–154 (Springer, Heidelberg, 1988).
2. Lührmann, R. in Structure and Function of Major and Minor snRNPs (ed. Birnsteil, M. L.) 71–99 (Springer, Heidelberg, 1988).
3. Zhuang, Y. & Weiner, A. M. Genes Dev. 3, 1545–1552 (1989).
4. Hausner, T.-P., Giglio, L. M. & Weiner, A. M. Genes Dev. 4, 2146–2156 (1990).
5. Shuster, E. O. & Guthrie, C. Nature 345, 270–273 (1990).