McCormick, M. P., Swissler, T. J., Fuller, W., Hunt, W., & Osborn, M. (1984). Airborne and Ground-Based lidar measurements of the El Chichón stratospheric aerosol from 90°N to 56°S. Geofísica Internacional, 23(2), 187–221. https://doi.org/10.22201/igeof.00167169p.1984.23.2.837