“WMO/GAW inter-comparison of Dobson Ozone Spectrophotometer in Tsukuba, Japan-2006 and inter-comparison of National standard 112 with Delhi Dobson 36 ”, MAUSAM, vol. 64, no. 2, pp. 317–322, Apr. 2013, doi: 10.54302/mausam.v64i2.688.