%0 Journal Article %A Bisgaard, Torben Maack %T An example of a positive semidefinite double sequence which is not a moment sequence %J Czechoslovak Mathematical Journal %D 2004 %P 273-277 %V 54 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMJ_2004__54_2_a0/ %G en %F CMJ_2004__54_2_a0