YADAV, J. K. S. ., R. K. . GIRI, and D. K. . MALIK. “Effect of Broadcast and Precise Satellite Orbits in the Estimation of Zenith Tropospheric Delay and Integrated Precipitable Water Vapour from GPS”. MAUSAM, vol. 61, no. 2, Apr. 2010, pp. 197-02, doi:10.54302/mausam.v61i2.801.