Acta Crystallographica Section A
Acta Crystallographica
Section A FOUNDATIONS AND ADVANCES

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FOUNDATIONS
ADVANCES

Volume 28| Part 5

ISSN: 2053-2733

September 1972 issue

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research papers

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International Union of Crystallography Commission on Crystallographic Computing. Standard tests for crystallographic computer programs. I. Calculations commonly used in crystal-structure analysis

F. R. Ahmed, D. W. J. Cruickshank, A. C. Larson and J. M. Stewart

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Strong enantiomorph discrimination via calculated cosine invariants

H. Hauptman and W. L. Duax

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Méthode directe de correction des profils de raies de diffraction des rayons X. III. Sur la recherche de la solution optimale lors de la déconvolution

R. Louboutin and D. Louër

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Extinction in a large crystal of lithium fluoride

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Extinction in lithium fluoride – a comment on Zachariasen's theory of extinction

R. C. G. Killean, J. L. Lawrence and V. C. Sharma

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Further remarks concerning optimization of counting times in single-crystal diffractometry: rebuttal to Killean: considerations of background counting and slewing times

D. P. Shoemaker and W. C. Hamilton

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The relation between space group symmetry and the properties of direct solutions based on the Σ₂ formula. A method for using centrosymmetric Σ₂ solutions for solving non-centrosymmetric structures

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Derivation of van der Waals radii from known crystal structures

G. Gafner, F. H. Herbstein and C. M. Lee

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Discrepancy factors for use in crystal structure analysis

S. Parthasarathy and V. Parthasarathi

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The molecular packing of solid II cyclobutane by means of spectroscopic data and potential-energy calculations

E. Castellucci, M. G. Migliorini and P. Manzelli

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An improvement in the algorithm for absorption correction by the analytical method

N. W. Alcock, G. S. Pawley, C. P. Rourke and M. R. Levine

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Constrained refinement techniques applied to the structure of ammonium hydrogen sulphate above the ferroelectric transition

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X-ray diffraction from materials containing antiphase domains

R. W. Cheary and N. W. Grimes

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Application de la notion de groupe rigide à la determination de structures cristallines simples

D. André, R. Fourme and M. Renaud

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Solution of the Klein–Gordon equation for a periodic lattice

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Direct phase determination from resonant γ-quantum diffraction experiments

F. N. Chukhovskii and I. P. Perstnev

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short communications

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Elastic coefficients of higher orders in crystals

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The hexagonal close-packed Kikuchi map

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Grain boundary parameters. Erratum

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Room temperature effect on dislocations in CdI₂ crystals

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Coherent neutron-scattering amplitudes for ²⁴Mg, ²⁵Mg and ²⁶Mg isotopes

A. A. Khail, F. A. Amin, A. Al-Naimi, A. Al-Saji, G. Y. Al-Shahery, V. F. Petrunin and M. G. Zemlyanov

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The (Q,ω) transmission function of a triple-axis neutron spectrometer. Erratum

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international union of crystallography

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Commission on Neutron Diffraction

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notes and news

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Notes and News

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book reviews

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Electron diffraction by T. B. Rymer

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Electron diffraction in gases by M. I. Davis

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Methods in X-ray crystallography by J. W. Jeffery

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Advances

Recently published Advances articles are given below.

Interpretation of angular symmetries in electron nanodiffraction patterns from thin amorphous specimens. A. C. Y. Liu, G. R. Lumpkin, T. C. Petersen, J. Etheridge & L. Bourgeois (2015). Acta Cryst. A71, doi:10.1107/S2053273315011845.

Identification of inversion domains in KTiOPO₄ via resonant X-ray diffraction. F. Fabrizi, P. A. Thomas, G. Nisbet & S. P. Collins (2015). Acta Cryst. A71, 361-367.

Partial order among the 14 Bravais types of lattices: basics and applications. H. Grimmer (2015). Acta Cryst. A71, 143-149.

SHELXT - Integrated space-group and crystal-structure determination. G. M. Sheldrick (2015). Acta Cryst. A71, 3-8.

Special issues

Mathematical Crystallography

Bragg centennial issue

Laue centennial issue

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