The SciencesThe Liquefaction of Ozone and its Color in the Gaseous StateMarch 12, 1881 — MM. Hautefeuille and J. Chappuis
The SciencesOn the Liquefaction of Ozone, and on its Color in the Gaseous StateNovember 20, 1880 — MM. P. Hautefeuille and J. Chappuis