Three-dimensional pattern recognition: an approach to automated interpretation of electron density maps of proteins.

By J. Greer. 1974

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Features and development of Coot (2010, neutral): “In Coot , this facility is coupled with an electron-density ridge-trace skeleton (Greer, 1974).”
Incorporation of prior phase information strengthens maximum-likelihood structure refinement. (1998, methodology): “…structure; (ii) screen out the interpreted density, and modify the remaining part as described above or by some other method such as skeletonization (Greer, 1974) or pseudoatom addition (Isaacs & Agarwal, 1978; Perrakis et al., 1997); (iii) calculate structure factors from this modi®ed electron…”
Auto-rickshaw: an automated crystal structure determination platform as an efficient tool for the validation of an X-ray diffraction experiment. (2005, methodology): “The ‘bones’ are produced by skeletonizing the resulting electron density (Greer, 1974) using the program MAPMAN (Jones & Thirup, 1986) with default parameters.”
Knowledge-based real-space explorations for low-resolution structure determination. (2006, background): “O (Jones and Kjeldgaard, 1997) and QUANTA (Oldfield, 2001) first trace a Ca skeleton through the density with three-dimensional pattern recognition ( Greer, 1974 ).”