Lycourghiotis, A., Defosse, C., & Delmon, B. (1979). Xps and Drs Investigation of the Effect of Na On Gamma-al2o3 Supported Cobalt Oxide. Revue de Chimie Minerale / Inorganic Chemistry Review / Revue fuer Anorganische Chemie, 16(5), 473-476. https://hdl.handle.net/2078.5/84081 (Original work published 1979)