BHATTACHARYA, P. K., and C. M. BARMA. “Study of the Pre-Monsoon Squalls from 1975 to 1979 over Dum Dum With Reference to Radar Echoes”. MAUSAM, vol. 32, no. 1, Jan. 1981, pp. 97-100, doi:10.54302/mausam.v32i1.3440.