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Attribute Grammars and Parsers for Chunk-based Binary File Formats.
William Underwood and Sandra Laib
ICL/ITDSD Technical Report 12-02, Georgia Tech Research Institute, December 2012.

Grammar-Based Specification and Parsing of Binary File Formats
William Underwood
International Journal of Digital Curation, Vol 7, No 1 (2012).

Advanced Language Processing Technology Applied to Digital Records: Annual Technical Status Report Oct. 1, 2010 - Sept. 30, 2011
W. Underwood, S. Laib, A. McIntyre, M. G. Holder, S. Hughes
Technical Report ITTL/CSITD 11-05, Georgia Tech Research Institute, November 2011.

Advanced Language Processing Technology Applied to Digital Records: Annual Technical Status Report Oct. 1, 2009 – Sept. 30, 2010
W. Underwood, S. Laib, S. Isbell, A. McIntyre, R. Gonzales, S. Hughes
Technical Report ITTL/CSITD 10-04, Georgia Tech Research Institute, November 2010.

Grammar-Based Recognition of Documentary Forms and Extraction of Metadata
William Underwood
International Journal of Digital Curation, Vol 5, No 1 (2010).

A Grammar and Parser for Recognition of Documentary Forms and Metadata Extraction
William Underwood, Sandra Laib, Sheila Isbell
Technical Report ITTL/CSITD 09-06, GTRI September 2009 (Revised October 2010)

Advanced Decision Support for Archival Processing of Presidential Electronic Records: Final Scientific and Technical Report (September 22, 2006- September 21, 2009).
W. Underwood, M. Hayslett, S. Isbell, S. Laib, Scott Sherrill & M. Underwood.
PERPOS TR ITTL/CSITD 09-05 , Georgia Tech Research Institute, October 2009

Extensions of the UNIX File Command and Magic File for File Type Identification.
W. Underwood.
PERPOS TR ITTL/CSITD 09-02, Georgia Tech Research Institute, September 2009

Advanced Decision Support for Archival Processing of Presidential Electronic Records: Annual Technical Status Report (July 2007- June 2008)
W. Underwood, S. Isbell, S. Laib & M. Underwood.
PERPOS TR ITTL/CSITD 08-06, Georgia Tech Research Institute, August 2008.

Recognizing Speech Acts in Presidential E-records.
W. Underwood.
PERPOS TR ITTL/CSITD 08-03, Georgia Tech Research Institute, October 2008.

Recognition of Documentary Forms.
W. Underwood and S. Laib.
PERPOS TR ITTL/CSITD 08-02, Georgia Tech Research Institute, Atlanta, Georgia, May 2008.

Semantic Annotation of Presidential E-records.
W. Underwood and S. Isbell.
PERPOS TR ITTL/CSITD 08-01, Georgia Tech Research Institute, May 2008.

Issues in Migrating PERPOS to a New Development Environment. PERPOS TR ITTL/CSITD 07-10, Georgia Tech Research Institute, October 2007 (Revised November 2008).
S. Laib & W. Underwood.
PERPOS TR ITTL/CSITD 07-06, Georgia Tech Research Institute, August 2007.

Advanced Decision Support for Archival Processing of Presidential Electronic Records: Annual Technical Status Report (October 2007- June 2007)
W. Underwood, S. Isbell, S. Laib & M. Underwood.
PERPOS TR ITTL/CSITD 08-06, Georgia Tech Research Institute, August 2008.

Results of Pilot Testing of FOIA Processing Using PERPOS.
D. Carter, B. Clement, S. Laib and W. Underwood.
PERPOS TR ITTL/CSITD 07-04, ITTL, Georgia Tech Research Institute, June 2007.

Semantic Annotation of Presidential E-Records.
S. Isbell, M. Underwood and W. Underwood.
PERPOS TR ITTL/CSITD 07-01, ITTL, Georgia Tech Research Institute, August, 2007.

PERPOS Version 3.1: Installation Guide.
S. Laib, M. Underwood & W. Underwood
PERPOS TR ITTL/CSITD 06-07, Georgia Tech Research Institute, December 2006.

The Presidential Electronic Record Pilot System (PERPOS) - Phase II: Final Scientific and Technical Report, June 19, 2003 – September 30, 2006.
W. Underwood, R. Simpson, E. Whitaker, L. Iwanska, S. Laib, B. Harris, M. Underwood, S. Isbell, M. Hayslett, D. Campbell, D. Molavi and J. Kau
PERPOS TR ITTL/CSITD 06-06, Georgia Tech Research Institute, December 2006.

FOIA Processing in the Presidential Electronic Records Pilot System.
S. Laib and W. Underwood.
PERPOS TR ITTL/CSITD 06-05, Georgia Tech Research Institute, July 2006.

Reference Manual for PERPOS: An Electronic Records Repository and Archival Processing System, Version 3.1.
W. Underwood, S. Laib and M. Hayslett-Keck.
PERPOS TR ITTL/CSITD 06-2, Georgia Tech Research Institute, September 2006.

Inferring and Recognizing the Documentary Form of Record Types
W. E. Underwood, B. Harris
PERPOS TR ITTL/CSITD 05-08, Georgia Tech Research Institute, August, 2006.

Access Restriction Checker
B. Harris, E. Whitaker, R. Simpson.
PERPOS Technical Report 05-07, ITTL/CSITD, Georgia Tech Research Institute, August 2005.

PERPOS II: Annual Technical Status Report (July 1, 2004 -- June 30, 2005)
W.E. Underwood, R. Simpson, E. Whitaker, S. Laib, B. Harris, M. Underwood, D. Campbell and J. Kau
PERPOS Technical Report 05-04, ITTL/CSITD, Georgia Tech Research Institute, August 2005.

The PERPOS Tools: User's Guide, Version 3.0
W.E. Underwood, M. Hayslett-Keck and S. Laib
PERPOS Technical Report 05-02, ITTL/CSITD, Georgia Tech Research Institute, March 2005.

PERPOS Information Assurance
J. Kau and S. Nguyen
PERPOS Technical Report 05-01, ITTL/CSITD, Georgia Tech Research Institute, May 2005

PERPOS II: Scientific and Technical Report (June 19, 2003 - June 18, 2004)
W. Underwood, R. Simpson, E. Whitaker, D. Molavi, M. Hayslett-Keck, S. Laib and M. Underwood.
PERPOS Technical Report 04-08, ITTL/CSITD, Georgia Tech Research Institute, August 2004.

Factual Knowledge Needed for Information Extraction and FOIA Review
B. Harris and W. Underwood
PERPOS Technical Report 04-07, ITTL/CSITD, Georgia Tech Research Institute, December 2004.

A Corpus of Presidential, Federal and Personal Records for use in Information Extraction, Description and FOIA/PRA Review Experiments
W. Underwood and M. Hayslett-Keck
PERPOS Technical Report 04-05 CSITD/ITTL/GTRI, June 2004.

Recognizing Named Entities in Presidential Electronic Records
M.G. Underwood
PERPOS Technical Report 04-04 CSITD / ITTL / GTRI June 2004 (Revised November 2004)

Information Security Practices Recommended for use with the PERPOS2 Server
D. Molavi
PERPOS Technical Report 04-02 CSITD/ITTL/GTRI, January 2004.

An Analysis of the Knowledge Required to Perform FOIA and PRA Review
M. Hayslett-Keck and W.E. Underwood
PERPOS Technical Report 04-01, CSITD/ITTL/GTRI, January 2004 (Revised March 2004)

The Archival Processing Tool: User's Guide, Version 2.06
W. Underwood, M. Hayslett-Keck and S. Laib
PERPOS Technical Report 03-02, CSITD/ITTL/GTRI Georgia Tech Research Institute December 2003

The Presidential Electronic Records PilOt System: Results of Laboratory Experiments and Use by Archivists
W. E. Underwood. PERPOS TR 03-01, CSITD/ITTL/GTRI, November 2003.

Study of the Use of the Presidential Electronic Records PilOt System (PERPOS): Final Report
W. Underwood, S. Laib, M. Hayslett-Keck, M. Underwood, and David Roberts.
PERPOS TR ITTL/CSITD 02-04, December 2002.

Evaluation of Document Retrieval Technologies to Support Access to Presidential Electronic Records
W. E. Underwood and M. G. Underwood. PERPOS TR ITTL/CSITD 02-03, December 2002.

A Formal Method for Analyzing the Authenticity Properties of Procedures for Preserving Digital Records
W. E. Underwood. Proceedings of the 2002 International Conference on Digital Archive Technologies (ICDAT2002)
December 19-20, 2002, Academia Sinica, Taipei, Taiwan, pp. 53-64.

Presidential Electronic Records PilOt System (PERPOS): Phase I Report
W. E. Underwood, M. R. Kindl, M. G. Underwood and S. Laib. PERPOS TR ITTL/CSITD 01-01, August 2001.

Analysis of Presidential Electronic Records: Final Report
W. E. Underwood. September 1999.