14 Walker, J. E., Lutter, R., Dupuis, A. and Runswick, M. J. (1991) Biochemistry 30, 5369-5378 Lutter, R., Abrahams, J. P., van Raaij, M. J., Todd, R. J., Lundqvist, T., Buchanan, S. K., Leslie, A. G. W. and Walker, J. E. (1993) J. Mol. Biol. 229, 787-790 Ahrahams, J. P. and Leslie, A. G. W. (1996) Acta Cryst. D 52, 30-42 Abrahams, J. P., Leslie, A. G. W., Lutter, R. and Walker, J. E. (1994) Na...

Replies by E. F. Alf and N. M. Abrahams and by L. G. Rorer defend the correlation-regression approach to model testing, contending that if a priori measurements are assumed to be proper psychological values and if the correct model is known, correlations can be higher for the better model. But since psychologists cannot know in advance the correct scales and models, popular correlational techni...

Release 2006/1 of the Inorganic Crystal Structure Database contains 155 entries under space group R3. Atomic coordinate analysis of the first 81 structures, with 52 different structure types, in Part I [Abrahams (2006). Acta Cryst. B62, 26-41] identified a total of 18 new types that satisfy the structural criteria for ferroelectricity, five that are more likely to have or undergo a transition t...