Direct evidence for double-exchange coupling in - substituted x , S. Sundar Manoharan, R. K. Sahu, M. L. Rao, D. Elefant and C. M. SchneiderEurophys. Lett., 59 3 (2002) 451-457DOI: https://doi.org/10.1209/epl/i2002-00216-4