INTEGRATED DIRECT METHOD WITH ANOMALOUS SCATTERING: TRIPLETS - SECOND NEIGHBOURHOOD. D. Velmurugan and D. Subhashini, Department of Crystallography and Biophysics, University of Madras, Madras - 600 025, India

Hauptman in the year 1982, integrated the Traditional Direct Method's formalism with the Anomalous Scattering methods for the case of triplets in their first neighbourhood. The applications of this new theory on the error free data of macromolecules show promising results. This instilled an encouragement in us in going on for the conditional probability distribtion of triplets in its second neighbourhood in the presence of anomalous scattering.