Matthijs van Berkel Gerd Vandersteen Hans Zwart Dick Hogeweij Marco R. de Baar Maximum Likelihood Estimation of diffusion and convection in tokamaks using infinite domains. 1230-1234 2013 CCA https://doi.org/10.1109/CCA.2013.6662920 conf/IEEEcca/2013 db/conf/IEEEcca/IEEEcca2013.html#BerkelVZHB13