You may also wish to search for items by Pope, F. and Pope.
Only one matching reference was found.
Pope, F.D.; Hansen, J.C.; Bayes, K.D.; Friedl, R.R.; Sander, S.P., Ultraviolet Absorption Spectrum of Chlorine Peroxide, ClOOCl, J. Phys. Chem. A, 2007, 111, 20, 4322, https://doi.org/10.1021/jp067660w . [all data]