@Article{ Bachmayr.Cohen.Migliorati, author = {Bachmayr, Markus and Cohen, Albert and Migliorati, Giovanni}, title = {Representations of {G}aussian random fields and approximation of elliptic {PDE}s with lognormal coefficients}, annote = {journal}, journal = {J. Fourier Anal. Appl.}, fjournal = {Journal of Fourier Analysis and Applications}, eprint = {1603.05559}, year = {2017}, note = {To appear}, doi = {10.1007/s00041-017-9539-5} }