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Electron crystallography of zeolites – the MWW family as a test of direct 3D structure determination 

Acta Cryst. (2005). A61, 516–527

[MWW potential map] Direct methods [001] MWW potential map compared to actual structural framework.
The 3D crystal structure of zeolites in the MWW framework family is determined from electron diffraction intensities by direct phasing using maximum entropy and likelihood. Although the ‘missing cone’ left from incomplete goniometric data sampling leads to a somewhat distorted model, the true zeolite framework geometry may be recovered by imposing conservative bonding restraints.
D. L. Dorset, W. J. Roth and C. J. Gilmore