• Jul 2003 - Jun 2007, Automatic Translation of Scientific Literature to Braille, National Science Foundation Research, ITR03-12487, $359,325.

• Sep 1981 - Mar 1985, Complexity of Decision Problems, National Science Foundation Research, MCS80-21124-A01/MCS83-08828, $49,173.

• Jun 1979 - Aug 1981, Computational Complexity of Certain Decision Problems, National Science Foundation Research, MCS79-09967/MCS80-21124, $30,010.

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