NEC hereby grants the right to use, reproduce, modify and redistribute CiteSeer (formerly ResearchIndex) software (Software) in source and object code, for non-commercial use only, provided that the following conditions are met:

1. Redistributions of source code and/or object code must retain the above copyright notice, this list of conditions and the following disclaimer in the source code, documentation and other materials provided with the distribution.

2. All modifications to this Software, and all software that uses part or all of this Software, must be licensed in source and object code as a whole at no charge to NEC and all third parties under the terms of this license. Modified versions of this Software must retain the above copyright notice, this list of conditions and the following disclaimer. All modified source files must indicate the author and date of modifications.

3. All products and services using all or part of this Software must credit NEC. Unless written permission is obtained from NEC, NEC's name and/or logo must be displayed on output that displays information derived from all or part of the Software.

4. The name of NEC and its affiliated companies may not be used to endorse or promote products derived from this Software without specific prior written permission of NEC.

5. All copies, derivative works or modified versions of the Software shall be exported or reexported in accordance with applicable laws and regulations relating to export control. The Software may not be used for illegal or military purposes.

6. This Software is experimental. NEC does not make any representations regarding the suitability of this Software for any purpose and NEC will not support the Software.

7. NEC grants no licenses or other rights, express or implied, in any NEC intellectual property other than that granted under the above terms.

8. This Software, including any modifications thereto, shall not be sold, rented, leased or otherwise redistributed for commercial purposes without the prior written consent of NEC.

THIS SOFTWARE IS PROVIDED BY NEC "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NEC BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. NEC ALSO DISCLAIMS ANY WARRANTY THAT THE SOFTWARE IS FREE OF INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHTS OF OTHERS.