Dokl. Akad. Nauk SSSR, 1963 Volume 152, Number 2,Pages 346–348(Mi dan28565)
CHEMISTRY
Fusibility diagram of the $\mathrm{Cl}_2\mathrm{O}_7$ – $\mathrm{SO}_3$ – $\mathrm{H}_2\mathrm{O}$
system in the region of high perchloric and sulphuric acid concentrations