→Links to XDS papers by Wolfgang Kabsch
# [http://dx.doi.org/10.1107/S0021889887009737 ''J. Appl. Cryst.'' (1988). 21, 67-72. Automatic indexing of rotation diffraction patterns.] explaining the diffraction geometry as used in XDS, the local-indexing method used in IDXREF and the refinement of diffraction geometry parameters.
# [http://dx.doi.org/10.1107/S0021889888007903 ''J. Appl. Cryst.'' (1988). 21, 916-924. Evaluation of single-crystal X-ray diffraction data from a position-sensitive detector]. This is ''the'' reference for the integration and scaling algorithms employed in the INTEGRATE and CORRECT steps.
# [http://dx.doi.org/10.1107/S0021889893005588 ''J. Appl. Cryst.'' (1993). 26, 795-800. Automatic processing of rotation diffraction data from crystals of initially unknown symmetry and cell constants]. This builds upon publication 1. and gives further important details of the IDXREF step, in particular about space-group determination.
# [http://www.iucr.org/iucr-top/comm/commit/volf.html Chapters 11.3 and 25.2.9 in ''International Tables for Crystallography Volume F: Crystallography of Biological Macromolecules''] (don't know the link to PDFs of these)