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Phaser is a program for phasing macromolecular crystal structures with maximum likelihood methods. It has been developed by Randy Read's group at the University of Cambridge and is available through the Phenix and CCP4 software suites, and directly from this site.

Reference

Citing crystallographic software in your paper is important for funding new software development. We rely on your citations to convince funding bodies that our software is being used.

If you solve a structure with Phaser, please cite:

  Phaser crystallographic software. 
  A. J. McCoy, R. W. Grosse-Kunstleve, P. D. Adams, M. D. Winn, L.C. Storoni and R.J. Read.
  J. Appl. Cryst. (2007). 40, 658-674.