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The Zelig project would not have been possible without considerable help from many sources. Our special thanks go to the R core team for providing an excellent modular, open-source platform for the entire statistics and methodological community.
The authors of the following R packages have provided some of the models available through Zelig: MASS by William N. Venables and Brian D. Ripley; MCMCpack by Andrew D. Martin and Kevin M. Quinn; survival by Terry Therneau and Brian D. Ripley; and VGAM by Thomas Yee.
The authors of the following R packages have provided some of the auxiliary statistical procedures and methods available through Zelig: boot by Angelo Canty and Brian Ripley; coda by Martyn Plummer, Nicky Best, Kate Cowles, and Karen Vines; sandwich by Achim Zeileis; and zoo by Achim Zeileis and Gabor Grothendieck.
Our appreciation also goes to Ferdinand Alimadhi, Skyler J. Cranmer, Ben Goodrich, Justin Grimmer, Yang Lin, and Ying Lu, who have contributed either code or documentation; Dan Hopkins, Ian Yohai, and others who have given valuable feedback from the courses in which they have used Zelig as a teaching tool.
For research support, we thank the National Institutes of Aging (P01 AG17625-01), the National Science Foundation (SES-0318275, SES-0550873, IIS-9874747, SES-0112072), the Mexican Ministry of Health, the U.S. Library of Congress (PA# NDP03-1), and the Princeton University Committee on Research in the Humanities and Social Sciences.
As usual, all errors are our responsibility.