2
Full text available from Advanced Technologies & Aerospace Database: 01/01/1998 to 12/30/2011
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6
Full text available from Advanced Technologies & Aerospace Database: 01/01/2001 to 01/28/2002
Full text available from Research Library: 01/01/2001 to 01/28/2002
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8
Full text available from Advanced Technologies & Aerospace Database: 01/02/2002 to 05/17/2007
Full text available from Computer Science Database: 01/02/2002 to 05/17/2007
Full text available from Science Database: 01/02/2002 to 05/17/2007
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