@article{CMJ_2004__54_2_a0,
     author = {Bisgaard, Torben Maack},
     title = {An example of a positive semidefinite double sequence which is not a moment sequence},
     journal = {Czechoslovak Mathematical Journal},
     pages = {273--277},
     publisher = {mathdoc},
     volume = {54},
     number = {2},
     year = {2004},
     mrnumber = {2059249},
     zbl = {1080.43500},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2004__54_2_a0/}
}