1. 1958 ‘VODARO Parameters 1953–57’. Scientific Report HB 5 Contract AF 19(604)–2177. Atmospheric Research Observatory, Arizona State College, Flagstaff, USA
2. and 1981 ‘Use of Chappuis band for determination of modern and historical ozone levels'. Final Report to NASA/Langley on Grant NSG 1430. Available from Astronomy Dept., San Diego State University, San Diego, USA
3. Baseline Ozone Results from 1923 to 1955
4. Recherches sur l'ozone atmosphérique