MIDYA, S. K. ., S. . C. . GANDA, and S. N. . SAHU. “ANTARCTIC O3 DEPLETION AND ITS CORRELATION WITH RELATIVE SUN-SPOT NUMBER”. MAUSAM, vol. 50, no. 4, Oct. 1999, pp. 403-6, doi:10.54302/mausam.v50i4.1954.