Influence of broadened pump wave spectra on the stochastic heating in an ECR mirror machineA. A. Ivanov, U. Wolters, D. Meyer, J. M. Buzzi and K. WiesemannEurophys. Lett., 59 6 (2002) 841-847DOI: https://doi.org/10.1209/epl/i2002-00119-4