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 Results for DC.creator="I." AND DC.creator="Usón" in section 16.1.3 of volume F
`Multisolution' methods and trial structures
Sheldrick, G. M., Gilmore, C. J., Hauptman, H. A., Weeks, C. M., Miller, R. and Usón, I.  International Tables for Crystallography (2012). Vol. F, Section 16.1.3.2, p. 417 [ doi:10.1107/97809553602060000850 ]
`Multisolution' methods and trial structures 16.1.3.2. `Multisolution' methods and trial structures Successful crystal structure determination requires that sufficient phases be found such that a Fourier map computed using the corresponding structure factors will reveal the atomic positions. It is particularly important that the biggest terms (i.e., largest ) be included in ...

Structure invariants
Sheldrick, G. M., Gilmore, C. J., Hauptman, H. A., Weeks, C. M., Miller, R. and Usón, I.  International Tables for Crystallography (2012). Vol. F, Section 16.1.3.1, pp. 416-417 [ doi:10.1107/97809553602060000850 ]
Structure invariants 16.1.3.1. Structure invariants The magnitude-dependent entities that constitute the foundation of direct methods are linear combinations of phases called structure invariants. The term `structure invariant' stems from the fact that the values of these quantities are independent of the choice of origin. The most useful of the structure ...

Starting the phasing process
Sheldrick, G. M., Gilmore, C. J., Hauptman, H. A., Weeks, C. M., Miller, R. and Usón, I.  International Tables for Crystallography (2012). Vol. F, Section 16.1.3, pp. 416-417 [ doi:10.1107/97809553602060000850 ]
Starting the phasing process 16.1.3. Starting the phasing process The phase problem of X-ray crystallography may be defined as the problem of determining the phases [varphi] of the normalized structure factors E when only the magnitudes are given. Owing to the atomicity of crystal structures and the redundancy of the ...

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