1. Arnott, S., Chandrasekaran, R., Hukins, D. W. L., Smith, P. J. C., and Watts, L., Structural details of a double helix observed for DNA's containing alternating purine and pyrimidine sequences. J. molec. Biol.88 (1974) 523–533.
2. Bergey's Manual of Systematic Bacteriology, 1st edn. (This replaced the editions up to the eighth, of Bergey's Manual of Determinative Bacteriology.) Eds N. R. Krieg and J. G. Holt. (1984).
3. Bijvoet, J. M., Peerderman, A. F., and van Bommel, A. J., Determination of the absolute configuration of optically active compounds by means of X-rays. Nature168 (1951) 271–272.
4. Boycott, A. E., Diver, C., Garstang, S. L., and Turner, F. M., The inheritance of sinistrality inLimnaea peregra. Phil. Trans. R. Soc. London B219 (1930) 219–251.
5. Bradbury, E. M., Downie, A. R., Elliott, A., and Hanby, W.E., The stability and screw sense of the α-helix in poly-β-benzyl-L-aspartate. Proc. R. Soc. A259 (1960) 110–128.