van Kampen, Paul, O'Sullivan, G., Ivanov, V., Ipatov, A., Costello, John T. ORCID: 0000-0003-4677-9999 and Kennedy, Eugene T. ORCID: 0000-0002-0710-5281 (1997) Dramatic changes in the 3s autoionization process at the beginning of the Ar I sequence. Physical Review Letters, 78 (16). pp. 3082-3085. ISSN 0031-9007

Köble, Ulrich, Kiernan, Laurence, Costello, John T. ORCID: 0000-0003-4677-9999, Mosnier, Jean-Paul ORCID: 0000-0002-9312-1754, Kennedy, Eugene T. ORCID: 0000-0002-0710-5281, Ivanov, V., Kupchenko, V. and Shendrik, M. (1995) 4 f(P1) giant dipole resonance in La³⁺. Physical Review Letters, 74 (12). pp. 2188-2191. ISSN 0031-9007