Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_2006__56_5_a7, author = {Gudder, Stan}, title = {An order for quantum observables}, journal = {Mathematica slovaca}, pages = {573--589}, publisher = {mathdoc}, volume = {56}, number = {5}, year = {2006}, mrnumber = {2293588}, zbl = {1141.81008}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_2006__56_5_a7/} }
Gudder, Stan. An order for quantum observables. Mathematica slovaca, Tome 56 (2006) no. 5, pp. 573-589. http://geodesic.mathdoc.fr/item/MASLO_2006__56_5_a7/