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Yang, Y., M. Zha, L. Song, Z. Wei, Z. Wang, G. Ouyang, B. Xu, X. Wu, and J. Wang. 2005. Combined adjustment project of national astronomical geodetic networks and 2000’ GPS control network. Progress in Natural Science 15(5): 435–441.

Yang. Y., Y. Tang, C. Chen, M. Wang, P. Zhang, X. Wang, L. Song, and Z. Zhang. 2007. National 2000’ GPS control network of China. Progress in Natural Science 17(8): 983–987.

Yang. Y., Y. Tang, C. Chen, M. Wang, P. Zhang, X. Wang, L. Song, and Z. Zhang. 2009. Integrated adjustment of Chinese 2000’ GPS control network. Survey Review 41(313): 226–237.



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