%0 Journal Article %A Pulè, J. V. %T Positive maps of the CCR algebra with a finite number of non-zero truncated functions %J Annales de l'I.H.P. Physique théorique %D 1980 %P 395-408 %V 33 %N 4 %I Gauthier-Villars %U http://geodesic.mathdoc.fr/item/AIHPA_1980__33_4_395_0/ %G en %F AIHPA_1980__33_4_395_0