Resonant mixing of widely separated intermediate states and charge transfer at the 4d-4f resonance of La compoundsA. Moewes, A. V. Postnikov, E. Z. Kurmaev, M. M. Grush and D. L. EdererEurophys. Lett., 49 5 (2000) 665-671DOI: https://doi.org/10.1209/epl/i2000-00202-4