@article{CLTM_2003_2003_1_a3,
     author = {Bisgaard, Torben Maack},
     title = {Series dobles definidas positivas extremas que no son series de momento.},
     journal = {Collectanea mathematica},
     pages = {87-98},
     year = {2003},
     volume = {54},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CLTM_2003_2003_1_a3/}
}