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Mathematical Problems in Engineering
Volume 2009, Article ID 794578, 16 pages
Research Article

Quality of TEC Estimated with Mod_Ion Using GPS and GLONASS Data

Department of Cartography, Faculty of Science and Technology, São Paulo State University (UNESP), Rua Roberto Simonsen 305, 19060-900 Presidente Prudente, SP, Brazil

Received 1 July 2009; Accepted 28 September 2009

Academic Editor: Silvia Maria Giuliatti Winter

Copyright © 2009 Paulo de Oliveira Camargo. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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