Acta Crystallographica Section A
Acta Crystallographica
Section A FOUNDATIONS AND ADVANCES

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FOUNDATIONS
ADVANCES

Volume 33| Part 4

ISSN: 2053-2733

July 1977 issue

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research papers

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Strengthening of the triplet relationship. II. A new probabilistic approach in P1

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A probabilistic theory of the coincidence method. I. Centrosymmetric space groups

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A probabilistic theory of the coincidence method. II. Non-centrosymmetric space groups

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Electron-microscope and diffraction studies of polytypism in stilpnomelane

E. S. Crawford, D. A. Jefferson and J. M. Thomas

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A sequence of nested neighborhoods of the structure invariant ϕ_h + ϕ_k + ϕ_l + ϕ_m

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The probabilistic theory of the structure invariants ϕ_h + ϕ_k + ϕ_l + ϕ_m in P1

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The probabilistic theory of the structure invariants ϕ_h + ϕ_k + ϕ_l + ϕ_m in P $\overline{1}$

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Quintets: a sequence of nested neighborhoods of the structure invariant ϕ_h + ϕ_k + ϕ_l + ϕ_m + ϕ_n

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Quintets: a joint probability distribution of fifteen structure factors

S. Fortier and H. Hauptman

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Quintets: the probabilistic theory of the structure invariant ϕ_h + ϕ_k + ϕ_l + ϕ_m + ϕ_n

H. Hauptman and S. Fortier

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Experimental charge density distribution in potassium azide by diffraction methods

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La plus grande sphère inscrite entre quatre sphères

M. Hocquemiller

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A simple method of estimating the effect of series termination and thermal smearing on peak heights

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X-ray measurement of the root-mean-square displacement of atoms in zinc single crystals. A case of high anisotropic extinction

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Room-temperature Debye–Waller factors of magnesium oxide

T. H. K. Barron

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A method of determining the order parameter from thickness fringes in electron micrographs

C. Kinoshita, T. Mukai and S. Kitajima

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Asymmetric Bragg reflexion and extinction-free measurement

A. McL Mathieson

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Absolute structure determination with electron microscopy

O. Van der Biest and G. Thomas

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A high-resolution electron micrograph of the twin boundary in pyrite

G. Donnay, J. D. H. Donnay and S. Iijima

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On the refinement of atom–atom potential parameters in molecular crystals

G. Taddei, R. Righini and P. Manzelli

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A semi-empirical absorption-correction technique for symmetric crystals in single-crystal X-ray crystallography. I

B. Lee and J. R. Ruble

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A semi-empirical absorption-correction technique for symmetric crystals in single-crystal X-ray crystallography. II

B. Lee and J. R. Ruble

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Interaction energy and growth mechanisms on twinned and polytypic crystals of long-chain even n-alkanes. I. Interaction-energy calculations

R. Boistelle and D. Aquilano

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Photographic neutron diffraction study of L-histidine.HCl.H₂O by the modified Laue method

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Use of matrix direct methods for low-resolution phase extension for tRNA

A. D. Podjarny and A. Yonath

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Absolute structure factors for D(+)-tartaric acid

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Magnetic structure of Fe₂WO₆, a neutron diffraction study

H. Pinto, M. Melamud and H. Shaked

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A general property in extinction theories: the relation between incident point sources and homogeneous beams. Application to mosaic and perfect crystals

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Electron-optical imaging of the hollandite structure at 3 Å resolution

L. A. Bursill and A. R. Wilson

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Polytypisme du carbure de silicium: localisation et structure de polytype 102R basé sur la séquence (34)

J.-P. Gauthier and P. Michel

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short communications

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Structural phase transition in the spinel MgA1₂O₄

R. K. Mishra and G. Thomas

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Generalized X-ray scattering factors. Simple closed-form expressions for the one-centre case with Slater-type orbitals

J. Avery and K. J. Watson

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international union of crystallography

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Report of the International Mineralogical Association (IMA)–International Union of Crystallography (IUCr) Joint Committee on Nomenclature

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Establishment of a President's Fund

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notes and news

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Notes and News

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book reviews

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Optical properties of ions in solids (Proceedings of NATO Advanced Study Institute, Erice, Italy, june 1974) by B. Di Bartolo

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books received

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Crystal growth edited by B. R. Pamplin

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Progress in crystal growth and assessment: an international review journal edited by B. R. Pamplin

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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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