Palmer, R., Barnard, J., Hock, K., Šiller, L., Hunt, M., Wendelken, J., & Palmer, R. (1993). New resonances in high resolution EELS of adsorbed molecules: Electronic excitation of physisorbed O2. Surface Science, 291(1-2), pp. 139-144. doi:10.1016/0039-6028(93)91485-8

Palmer, Richard, J.C Barnard, K.M Hock, L. Šiller, M.R.C Hunt, J.F Wendelken, and R.E Palmer. "New Resonances in High Resolution EELS of Adsorbed Molecules: Electronic Excitation of Physisorbed O2." Surface Science 291, no. 1-2 (1993): 139-144.

Palmer, Richard, et al. "New Resonances in High Resolution EELS of Adsorbed Molecules: Electronic Excitation of Physisorbed O2." Surface Science 291.1-2 (1993): 139-144.