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 Results for DC.creator="A." AND DC.creator="Altomare" in section 4.2.8 of volume H
Resolution bias modification (RBM)
Altomare, A., Cuocci, C., Moliterni, A. and Rizzi, R.  International Tables for Crystallography (2019). Vol. H, Section 4.2.8.3, pp. 405-406 [ doi:10.1107/97809553602060000957 ]
... measured experimental domain of the reciprocal space is finite. As a consequence, series-truncation errors can distort the map: negative values ... better locate peaks. This new approach works in direct space (Altomare, Cuocci, Giacovazzo, Kamel et al., 2008 ; Altomare, Cuocci, Giacovazzo, Moliterni & Rizzi, 2008 ), reciprocal space (Altomare, Cuocci ...

Weighted least-squares (WLSQ) refinement
Altomare, A., Cuocci, C., Moliterni, A. and Rizzi, R.  International Tables for Crystallography (2019). Vol. H, Section 4.2.8.2, pp. 404-405 [ doi:10.1107/97809553602060000957 ]
... least-squares (WLSQ) refinement 4.2.8.2. Weighted least-squares (WLSQ) refinement A least-squares refinement procedure using the integrated intensities can be ... summation is over the number of reflections and wh is a suitable weight, which is now described. It is important to ... Rietveld method, which remains the most appropriate technique for refining a structural model from powder data. David (2004 ) has demonstrated ...

Fourier recycling (FR)
Altomare, A., Cuocci, C., Moliterni, A. and Rizzi, R.  International Tables for Crystallography (2019). Vol. H, Section 4.2.8.1, p. 404 [ doi:10.1107/97809553602060000957 ]
... derived from the Wilson plot is associated with each atom. A Fourier synthesis is computed by using the phase values and ... difference Fourier map is used for locating hydrogen atoms). A weighting scheme in the Fourier synthesis is usually used for ... itself. In particular, Sim weights (Sim, 1960 ), which require that a well localized fraction of the structure is known, can ...

Optimization of the structure model
Altomare, A., Cuocci, C., Moliterni, A. and Rizzi, R.  International Tables for Crystallography (2019). Vol. H, Section 4.2.8, pp. 404-406 [ doi:10.1107/97809553602060000957 ]
... calculated after the phasing process is often far from being a chemically reasonable one: some peaks are isolated, false peaks occur ... al., 1999 ) which, because of its modest convergence rate, needs a good starting model in order to provide a reliable refined structure. However, in many cases, despite the ...

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