“DEPLETION OF OZONE AND ITS EFFECT ON NIGHT AIRGLOW INTENSITY OF Na 5893 A° AT TRIVANDRUM (8.25° N, 76.9° E) AND HALLEY BAY (76° S, 27° W)” (2006) MAUSAM, 57(2), pp. 350–354. doi:10.54302/mausam.v57i2.512.