• Research Systems, Installing and Licensing ENVI 3.5, 2001. (PDF)

• Research Systems, ENVI Online Guide, Version 3.5, 2001. (PDF)

• Research Systems, ENVI Programmer's Guide, Version 3.5, 2001. (PDF)

• Research Systems, ENVI Tutorials, Version 3.5, 2001. (PDF)

• Research Systems, ENVI User's Guide, Version 3.5, 2001. (PDF)

• Research Systems, What's New in ENVI 3.5, 2001. (PDF)

• Research Systems, IDL Reference Guide 5.6, 2002. (PDF)

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