The Electronic Structure Tools (EST) Programs, run under Grams, and are for Kramers Kronig Dispersion Analysis, Optical Property and Sum Rule Calculation, Band Gap fitting, Valence EELS Analysis and Hamaker Constant Calculations. They are as part of EST from Deconvolution and Entropy Consulting, 755 Snyder Hill Road, Ithaca NY 14850 USA, Phone: 607-272-0645, http://www.deconvolution.com, Email: lin.denoyer@deconvolution.com.

Grams is a PC based spectroscopy environment in which the Electronic Structure Tools (EST), and Hamaker.ab, a component of EST, have been developed. Grams is available from Galactic Industries 325 Main St. Salem NH 03079, http://www.galactic.com.