Determination of tungsten sources in the JET-ILW divertor by spectroscopic imaging in the presence of a strong plasma continuum oleh A. Huber, S. Brezinsek, A. Kirschner, P. Ström, G. Sergienko, V. Huber, I. Borodkina, D. Douai, S. Jachmich, C.h. Linsmeier, B. Lomanowski, G.F. Matthews, P.h. Mertens