Acta Crystallographica Section A

Foundations of Crystallography

Volume 39, Part 6 (November 1983)



research papers



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Acta Cryst. (1983). A39, 825-837    [doi:10.1107/S0108767383001695]

Space-group determination by dynamic extinction in convergent-beam electron diffraction

M. Tanaka, H. Sekii and T. Nagasawa



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Acta Cryst. (1983). A39, 838-847    [doi:10.1107/S0108767383001701]

High-resolution electron microscopy of molecular crystals. II. Image simulation

M. A. O'Keefe, J. R. Fryer and D. J. Smith



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Acta Cryst. (1983). A39, 847-853    [doi:10.1107/S0108767383001713]

Moments of the probability density function of R2 approached via conditional probabilities. III. Models containing correctly as well as incorrectly placed atoms in the space groups P1 and P\overline{1}

W. K. L. Van Havere and A. T. H. Lenstra



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Acta Cryst. (1983). A39, 854-860    [doi:10.1107/S0108767383001725]

Effective structure factors in many-beam X-ray diffraction - use of the second Bethe approximation

R. Høier and K. Marthinsen



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Acta Cryst. (1983). A39, 860-864    [doi:10.1107/S0108767383001737]

A note on practical aspects of the application of DIRDIF, a procedure for structure elucidation when a part of the structure is known

V. Parthasarathi, P. T. Beurskens and H. J. Bruins Slot



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Acta Cryst. (1983). A39, 864-867    [doi:10.1107/S0108767383001749]

General lattice factor of the ideal paracrystal

W. Wilke



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Acta Cryst. (1983). A39, 868-875    [doi:10.1107/S0108767383001750]

Quasisymmetry (P-symmetry) in crystals

K. Rama Mohana Rao and M. Kondala Rao



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Acta Cryst. (1983). A39, 876-881    [doi:10.1107/S0108767383001762]

On enantiomorph-polarity estimation

H. D. Flack



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Acta Cryst. (1983). A39, 882-892    [doi:10.1107/S0108767383001774]

Least-squares analyses of diffuse scattering from substitutionally disordered molecular crystals: application to 2,3-dichloro-6,7-dimethylanthracene

J. Epstein and T. R. Welberry



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Acta Cryst. (1983). A39, 892-896    [doi:10.1107/S0108767383001786]

Statistical geometry. II. Numerical solution via the single pixel equation

S. W. Wilkins



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Acta Cryst. (1983). A39, 896-898    [doi:10.1107/S0108767383001798]

Statistical geometry. III. Accelerated convergence using contrast amplification

S. W. Wilkins



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Acta Cryst. (1983). A39, 899-901    [doi:10.1107/S0108767383001804]

A method for determining the charge in the peaks of deformation densities

C. Scheringer and A. Kutoglu



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Acta Cryst. (1983). A39, 902-907    [doi:10.1107/S0108767383001816]

The measurement of integrated intensities

W. Gonschorek



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Acta Cryst. (1983). A39, 907-915    [doi:10.1107/S0108767383001828]

On the equivalence of point configurations due to Euclidean normalizers (Cheshire groups) of space groups

W. Fischer and E. Koch



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Acta Cryst. (1983). A39, 916-920    [doi:10.1107/S010876738300183X]

Largest likely values for R factors calculated after phase refinement by non-crystallographic symmetry averaging

D. C. Rees



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Acta Cryst. (1983). A39, 920-924    [doi:10.1107/S0108767383001841]

Moments of the probability density function of R2 approached via conditional probabilities. IV. Influence of the elimination of (low-intensity) data on the applicability of R2 in automated structure evaluation

W. K. L. Van Havere and A. T. H. Lenstra



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Acta Cryst. (1983). A39, 925-933    [doi:10.1107/S0108767383001853]

Moments of the probability density function of R2 approached via conditional probabilities. V. Incorporation of the a priori knowledge of atomic coordinates in the evaluation of moments of R2

W. K. L. Van Havere and A. T. H. Lenstra



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Acta Cryst. (1983). A39, 933-936    [doi:10.1107/S0108767383001865]

New ZnS polytypes of the family 18L

S. Saliba and S. Mardix



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Acta Cryst. (1983). A39, 936-940    [doi:10.1107/S0108767383001877]

Patterson search - an alternative to direct methods

E. Egert



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Acta Cryst. (1983). A39, 941-946    [doi:10.1107/S0108767383001889]

Symmetry of the lattice-energy functional of a molecular crystal

A. V. Dzyabchenko


short communications



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Acta Cryst. (1983). A39, 946-947    [doi:10.1107/S0108767383001890]

Imaging of polytypes and stacking faults in tetrahedral compounds

A. F. Moodie and H. J. Whitfield


international union of crystallography



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Acta Cryst. (1983). A39, 948-949    [doi:10.1107/S0108767383001907]

Prices of Acta Crystallographica and Journal of Applied Crystallography


book reviews



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Acta Cryst. (1983). A39, 949-950    [doi:10.1107/S0108767383001919]

Interfacial aspects of phase transformations



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Acta Cryst. (1983). A39, 950    [doi:10.1107/S0108767383001920]

High-pressure research in geophysics. Advances in planetary sciences 12


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