Acta Crystallographica Section A

Foundations of Crystallography

Volume 50, Part 6 (November 1994)


Cover illustration Cover illustration: A computer-simulated Fourier transform of the following object symbolizing a small bidimensional crystal: Courtesy of A. Soyer and M. Pilard.

international union of crystallography



pdf version free

Acta Cryst. (1994). A50, 655-657    [doi:10.1107/S0108767394009311]

A. J. C. Wilson. 80 years


lead articles



pdf version buy article online

Acta Cryst. (1994). A50, 658-685    [doi:10.1107/S0108767394005738]

Structure relationship to dielectric, elastic and chiral properties

S. C. Abrahams


research papers



pdf version buy article online

Acta Cryst. (1994). A50, 686-690    [doi:10.1107/S0108767394003478]

A unified treatment of small-angle X-ray scattering, X-ray refraction and absorption using the Rytov approximation

T. J. Davis



pdf version buy article online

Acta Cryst. (1994). A50, 690-703    [doi:10.1107/S0108767394003648]

A more general expression for the average X-ray diffraction intensity of crystals with an incommensurate one-dimensional modulation

E. J. W. Lam, P. T. Beurskens and S. van Smaalen



pdf version buy article online

Acta Cryst. (1994). A50, 703-714    [doi:10.1107/S0108767394003235]

A Bayesian approach to extracting structure-factor amplitudes from powder diffraction data

D. S. Sivia and W. I. F. David



pdf version buy article online

Acta Cryst. (1994). A50, 714-725    [doi:10.1107/S0108767394003740]

A topological definition of a Wigner-Seitz cell and the atomic scattering factor

P. F. Zou and R. F. W. Bader



pdf version buy article online

Acta Cryst. (1994). A50, 725-730    [doi:10.1107/S0108767394004332]

Study of thermal behaviour of oxygen in silicon crystals by analysis of X-ray Pendellösung fringes

M. Li, Z.-H. Mai and S.-F. Cui



pdf version buy article online

Acta Cryst. (1994). A50, 730-736    [doi:10.1107/S0108767394003673]

The reduction of N-beam scattering from noncentrosymmetric crystals to two-beam form

A. F. Moodie and H. J. Whitfield



pdf version buy article online

Acta Cryst. (1994). A50, 737-741    [doi:10.1107/S0108767394004277]

New n-beam dynamical calculations combining two- and three-dimensional Bloch waves

K. Mitsuishi, K. Watanabe and I. Hashimoto



pdf version buy article online

Acta Cryst. (1994). A50, 741-748    [doi:10.1107/S010876739400437X]

On the statistical analysis of orientation data

N. C. Krieger Lassen, D. Juul Jensen and K. Conradsen



pdf version buy article online

Acta Cryst. (1994). A50, 748-753    [doi:10.1107/S0108767394004460]

STEP - a trial-and-error procedure for crystal structure determination. I. A description of the program system SYSTEM90

Y. Hou, M. Gao, L. Li and P. Hou



pdf version buy article online

Acta Cryst. (1994). A50, 753-759    [doi:10.1107/S0108767394005040]

The density of three-dimensional nets

S. T. Hyde



pdf version buy article online

Acta Cryst. (1994). A50, 759-771    [doi:10.1107/S0108767394005908]

On the validity of the direct phasing and Fourier method in electron crystallography

L.-M. Peng and S. Q. Wang



pdf version buy article online

Acta Cryst. (1994). A50, 771-778    [doi:10.1107/S0108767394004721]

The probabilistic estimation of triplet invariants: the formula P13

M. C. Burla, C. Giacovazzo, A. G. G. Moliterni and J. Gonzalez Platas



pdf version buy article online

Acta Cryst. (1994). A50, 778-792    [doi:10.1107/S0108767394005891]

Derivation of Wyckoff positions of N-dimensional space groups. Theoretical considerations

J. Fuksa and P. Engel


short communications



pdf version buy article online

Acta Cryst. (1994). A50, 793    [doi:10.1107/S0108767394009396]

The heavy atom problem: a statistical analysis. II. Consequences of the a priori knowledge of the noise and heavy-atom powers and use of a correlation function for heavy-atom-site determination. Erratum

P. Dumas



pdf version buy article online

Acta Cryst. (1994). A50, 793    [doi:10.1107/S0108767394009530]

Automated structure analysis in electron crystallography: phase determination with the tangent formula and least-squares refinement. Erratum

D. L. Dorset and M. P. McCourt



pdf version buy article online

Acta Cryst. (1994). A50, 793    [doi:10.1107/S0108767394009979]

On the modelling of neutron diffraction reflections from small single crystals. Erratum

A. McL Mathieson and A. W. Stevenson


international union of crystallography



pdf version free

Acta Cryst. (1994). A50, 794-795    [doi:10.1107/S0108767394099575]

Prices of IUCr journals


book reviews



pdf version free

Acta Cryst. (1994). A50, 796-797    [doi:10.1107/S0108767394008792]

Out of the crystal maze. Chapters from the history of solid-state physics edited by L. Hoddeson, E. Braun, J. Teichmann and S. Weart



pdf version free

Acta Cryst. (1994). A50, 797    [doi:10.1107/S0108767394007464]

Random, non-random and periodic faulting in crystals by M. Sebastian and P. Krishna


books received



pdf version free

Acta Cryst. (1994). A50, 797    [doi:10.1107/S0108767394007993]

Band theory of solids: an introduction from the point of view of symmetry by S. L. Altmann


Acta Cryst. (1994). A50, 799-802

Subject index to volume A50 (1994)


Acta Cryst. (1994). A50, 803-806

Author index to volume A50 (1994)


Copyright © International Union of Crystallography
IUCr Webmaster