S. . MIDYA, H. . SARKAR, S. . SARKAR, D. K. . MAITI, and M. . GHOSH, “Sharp decrease of attenuation of 183.31 GHz water molecule absorption line associated with Nor’wester over Kolkata – may be one important experimental set-up to forecast Nor’wester”, MAUSAM, vol. 63, no. 2, pp. 219–222, Apr. 2012.