GIRI, R. K., B. R. LOE, N. PUVIARSON, S. S. BHANDARI, and R. K. SHARMA. 2006. “Estimation of Precipitable Water Vapour from GPS During Winter Season 2003”. MAUSAM 57 (2):323-28. https://doi.org/10.54302/mausam.v57i2.479.